The Scope of Ph ysics 1. The branch of physical science, which deals with interaction of matter and energy, is called __________. (Physics, Chemistry, Biology) . The new era of modern physics began near the end of __________. (1!th cent"ry, 1#th cent"ry, 1$th cent"ry) %. Screw and le&er were in&ented by __________. ('ewton, "ygen, rchime des) *. Phythagoras is famo"s in __________. (Physics, Chemistry, 'one of these) +. n the -eld of research the strong incenti &e comes from __________. (Bible, "ran, ngeel) /. '"mber of ayah which are ta0en from S"rah 'ooh for o"r boo0 are __________. (11 and 1, 1% and 1*, 1+ and 1/) !. '"mber of ayah ta0en from S"rah l mran2 __________. (1!3 and1!1, 1#3 and 1#1, 1$3 and 1$1) #. l45hawari6mi was the fo"nder of __________. (7icrobiology, nalytical lgebra, Physics) $. 8ogarithm was in&ented by __________. (l4 Ber"ni, l45hawari6mi, bn4e4 Sina) 13. n 7"slim world the man was both a poet and a mathematician is __________. (9mer 5hyyam, l45hawari6mi, l4Ber"ni) 11. 5itab"l 7ana6ir was written by __________. (:a;oob Bin sha;, bn4e4Sina, bn4al4aitham) 1. Pin hole camera was in&ented by __________. (bn4al4aithan, l4<a6i, l4Ber"ni) 1%. bn4e4 Sina was famo"s for his research in the -eld of __________. (7edicine, mathematics, physics) 1*. 7"slim scientist who wrote abo"t 33 boo0s is __________. (bn4e4Sina, l4<a6i, 9mer 0hyyam) 1+. 3th cent"ry is called the cent"ry of __________. (Physics, Chemistry, 7athematics) 1/. =imension of acceleration is __________. (8T41, 8T4 , 841T) 1!. The signi-cant -g"res of 1/, ! are __________. (!, / and !, 1, / and !) 1#. The a"thor of 5itab4"l47asoodi was __________. (l4Ber"ni, bn4e4Sina, bn4al4aitham)
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1. The branch of physical science, which deals with interaction ofmatter and energy, is called __________.(Physics, Chemistry, Biology). The new era of modern physics began near the end of __________.
(1!th cent"ry, 1#th cent"ry, 1$th cent"ry)%. Screw and le&er were in&ented by __________.('ewton, "ygen, rchimedes)*. Phythagoras is famo"s in __________.(Physics, Chemistry, 'one of these)+. n the -eld of research the strong incenti&e comes from __________.(Bible, "ran, ngeel)/. '"mber of ayah which are ta0en from S"rah 'ooh for o"r boo0 are
__________.
(11 and 1, 1% and 1*, 1+ and 1/)!. '"mber of ayah ta0en from S"rah l mran2 __________.(1!3 and1!1, 1#3 and 1#1, 1$3 and 1$1)#. l45hawari6mi was the fo"nder of __________.(7icrobiology, nalytical lgebra, Physics)$. 8ogarithm was in&ented by __________.(l4 Ber"ni, l45hawari6mi, bn4e4 Sina)13. n 7"slim world the man was both a poet and a mathematician is
__________.
(9mer 5hyyam, l45hawari6mi, l4Ber"ni)11. 5itab"l 7ana6ir was written by __________.(:a;oob Bin sha;, bn4e4Sina, bn4al4aitham)1. Pin hole camera was in&ented by __________.(bn4al4aithan, l4<a6i, l4Ber"ni)1%. bn4e4 Sina was famo"s for his research in the -eld of __________.(7edicine, mathematics, physics)1*. 7"slim scientist who wrote abo"t 33 boo0s is __________.(bn4e4Sina, l4<a6i, 9mer 0hyyam)1+. 3th cent"ry is called the cent"ry of __________.(Physics, Chemistry, 7athematics)1/. =imension of acceleration is __________.(8T41, 8T4, 841T)1!. The signi-cant -g"res of 1/, ! are __________.(!, / and !, 1, / and !)1#. The a"thor of 5itab4"l47asoodi was __________.(l4Ber"ni, bn4e4Sina, bn4al4aitham)
1$. The a"thor of l4an"n4>il4Tib was __________.(l4Ber"ni, bn4e4Sina, bn4al4aitham)3. lsh4Shifa an encyclopedia of philosophy was written by __________.
(l4Ber"ni, bn4e4Sina, bn4al4aitham)1. tomic cloc0 is a (brie?y) radio transmitter gi&ing o"t short wa&es
of wa&elength abo"t __________.(%cm, %m, %@). The time inter&al occ"pied $1$/%1!!3 cycles of a speci-edenergy change in the Cesi"m atom is ta0en as e;"al to one __________.(second, min"te, ho"r)%. The ampere is the "nit of __________.(time, electric c"rrent)*. 7ole is the amo"nt of s"bstance of a system which contains asmany elementary entities as there are atom in 3.31 0g of __________.
(Cesi"m A 1%%, rani"m A $#, Carbon A 1)+. The dimension of &ol"me is __________.(8, 84, 8%)/. The dimension of &elocity is __________.(8T4, 8418, 8T41)!. The dimension of linear moment"m is __________.(78T41, 7841T, 7418T)#. The n"mber of /*3#. has __________ signi-cant -g"re(s).(one, fo"r, -&e)
$. The circ"mference of a circle of radi"s %.+ cm is __________.(1.$$cm, %#.*$ cm,1!$./ cm)%3. The &ol"me of a sphere of radi"s %.+ cm is __________.(1.$$ cm%, %#.*$cm%, 1!$./cm%)%1. l 5hawari6mi was the fo"nder of __________.(=ecimal system, eomtery, nalytical lgebra)%. n"mber, which is reasonably reliable, is called __________.(<atio, >"nction, Signi-cant >ig"re)%%. Dlectromagnetic wa&e theory of light is proposed by __________.(7aEwell, 'ewton, "ygen)%*. Fa&e mechanics were introd"ced by __________.(=e4Broglie, 7aEwell, 'ewton)%+. 'at"ral <adioacti&ity was disco&ered by __________.(7adam C"rie, Bac;"erel, 7aE4Plan0)
1/. The di&ision of a &ector by a positi&e n"mber n is gi&en byK LmLwhere m K 1Nn the direction of is __________.
(same as , oppoosite to , parallel to itself)
1!. The di&ision of &ector by a negati&e n"mber n is gi&en by K LmLwhere m K 1Nn the direction theis __________.(same as , oppoosite to , parallel to itself)
1#. "nit &ector is represented by __________.(,,)1$. The "nit &ectors are __________.
(parallel to each other, perpendic"lar to each other, none of the abo&e)
3. The s"m of rectang"lar components &ector prod"ces the original
&ector, which is represented by __________.
1. The magnit"de of &ectoris gi&en by __________., , )
. The dot prod"ct of "nit &ectors and is e;"al to __________.(i, , )
%. The dot prod"ct of "nit &ectors and is e;"al to __________.
*. The cross prod"ct of "nit &ector and is e;"al to __________(3, 1, )
+. The &ector prod"ct of and is ___________.(4,, r)
/. &ector which can be displaced parallel to it self and applied atany point is 0nown as __________.('"ll &ector, >ree Gector, Position Gector)
!. &ector, which can represent the position of a point with respect tosome -Eed point in coordinate system, is called __________.
('"ll Gector, >ree Gector, Position Gector)
#. f two &ectors which are e;"al in magnit"de b"t opposite indirection, their combination prod"ces __________.('"ll Gector, >ree Gector, Position Gector)
$. The hori6ontal component of &ector is gi&en by __________.( cos ;, sin ;, tan ;)
%3. The &ertical component of &ector is gi&en by __________.(cos;, sin;, tan)
%1. The prod"ct of magnit"de of two &ectors and cosine of the anglebetween them is called __________.(Scalar Prod"ct, Gector Prod"ct,'one of the abo&e)
%. The prod"ct of magnit"de of two &ectors and sine of the angle
%. The rate of change of position in a partic"lar direction is called __________.=isplacement, Gelocity, cceleration)
*. The total change in displacement di&ided by the total change in timeof body is called its __________.(&erage Gelocity, nstantane"o"s Gelocity, niform Gelocity)
+. The change of displacement in a &ery small inter&al of time (timetends to 6ero) of a body is called its __________.(&erage Gelocity, nstantaneo"s Gelocity, niform Gelocity)
/. Fhen a body "ndergoes an acceleration then __________.
(ts speed increases, ts &elocity increases, t falls toward the earth)
!. force acts on a body that is free to mo&e. Fe 0nown thatmagnit"de and direction of the force and the mass of the body.'ewton2s second law of motion enables "s to determine the body2s
__________.(cceleration, Speed, Gelocity)
#. hole is drilled thro"gh the earth along the diameter and a stone
dropped into it. Fhen the stone is at the centre of the earth it has __________.(7ass, Feight, cceleration)
$. force of %' acts perpendic"larly to a force of *'. Their res"ltanthas magnit"de of __________.(1', +', !')
13. n __________ of the following eEamples the motion of the car notaccelerated.(Car t"rns a corner at constant speed of $0mNhr, Car climbs a steephill with its speed dropping from /3 0mNhr at the bottom to 1+ 0mNhr atthe top, Car climbs a steep hill at the constant speed of *30mNhr)
11. The algebraic sign of acceleration depends on __________.(The choice of direction, Fhether an obHect is speeding "p or slowingdown, The position of the obHect)
1. The acceleration d"e to gra&ity __________.(has the same &al"e e&ery where in space, has the same &al"e e&erywhere on the earth, &aries with the latit"de on the earth)
1%. Swimming is possible beca"se of __________ law of motion.
(>irst, Second, Third)
1*. &ehicle is mo&ing hori6ontally at %3mNs. t is then accelerated"niformly in the same direction at 3.+ mNs for %3 seconds. ts -nalspeed is __________.(1#3 mNs, *+.3 mNs, $3 mNs)
1+. n obHect falls freely from rest with an acceleration of 13mNs(approEimately). Then the distance tra&eled after 3./ second is
__________.(1.# m, 1#.3 m, %./ m)
1/. trolley of mass 1.30g tra&elling at %mNs, collides with secondtrolley which is stationary. 9n collision the two trolley Hoin together andcontin"e to tra&el in the original direction with a common speed of 1.3mNs. __________is the mass of second trolley.(3.%%0g, 3./!0g, .30g)
1!. steel ball is dropped in a &isco"s ?"id. t will __________.(mo&e down with "niform &elocity, remain stationary, fall with "niformacceleration of $.# mNs)
1#. trolley of mass 0g mo&es with constant acceleration on asmooth hori6ontal s"rface. ts speed changes from *mNs to 1/ mNsd"ring /.3 seconds. The trolley has an acceleration of __________mNs.(3.+ , 3.//, )
1$. ="ring a stop a car comes to rest from a speed of 13 mNs in +seconds. ss"ming a steady deceleration d"ring this time, it will tra&ela distance of __________.(m, 13m, +m)
3. ball is dropped from a tall b"ilding falls to the gro"nd. Ballreaches the gro"nd in %.3 seconds. __________ is the height of theb"ilding.
1. trolley of mass 0g is mo&ing at 1+mNs. t collides head on withanother trolley of mass 10g initially at rest. The -rst trolley stic0s withsecond one. __________ is the speed of both trolleys after collision.
(+mNs, !.+mNs, 13mNs)
. Fhen a tennis ball is allowed to fall freely in air toward the gro"nd.t is fo"nd that it ac;"ires a "niform &elocity. This is beca"se the
__________.
(Feight of the ball does not act beyond a certain speed, pthr"st ofthe displaced air s"pports the ball, >rictional force ca"sed by the airincreases with speed)
%. The force re;"ired to accelerate mass of 10g at 1.3 mNs is __________.(1', 13', 133')
*. f a stone falls from rest with a "niform acceleration of 13mNs(approEimately) then __________.(t falls e;"al distance in s"ccessi&e seconds, it falls 13.3 m d"ring the-rst second, its speed increases by 13 mNs each second)
+. The frictionless trolley is mo&ing hori6ontally at %3mNs. t is thenaccelerated "niformly in the same direction at 3.+ mNs for %3.3seconds. The -nal speed is __________.(1+ mNs, *+ mNs, !+ mNs)
/. person co&ers half of its Ho"rney at a speed of *3 mNs and theother half at +3 mNs. is a&erage speed d"ring the whole Ho"rney is
__________.(*+ mNs, */ mNs, *# mNs, **.1 mNs)
!. n obHect is thrown &ertically "pward with a &elocity of *3 mNs andret"rns after some time into the thrower2s hands with the same&elocity. &erage &elocity d"ring the whole mo&ement is __________.(*3mNs, /3mNs, #3 mNs, 3)
#. body starts from rest and mo&es with "niform acceleration of
13mNs in the -rst 13 seconds. ="ring the neEt 13 seconds it mo&eswith "niform &elocity attained. The total distance co&ered by it is
__________.(33m, 1333m, 1+33m, +33)
$. ball dropped from the top of a b"ilding while another ball B is
thrown hori6ontally at the same time. The ball stri0es the gro"nd is __________.(Ball , Ball B, Both stri0es sim"ltaneo"sly)
%3. __________ of the following is one dimensional motion.(The wheels of a mo&ing train, the earth re&ol&ing ro"nd the s"n, train r"nning on a straight trac0)
%1. body has an initial &elocity of # mNs. fter mo&ing *m its &elocity
is 1 mNs. The acceleration is __________mNs.(13, 133, *)
%. body starting from rest tra&els 13 m in #th second. ss"ring themotion to be "niform, its acceleration is __________mNs.(1+, 1/, 13)
%%. body thrown &ertically "p with a &elocity of 13mNs, comes bac0 into the hand of the thrower after * seconds. eight attained by the body
is __________. (Ta0e g K 13mNs)(13m, +m, 1+m)
%*. The total change in &elocity of a body di&ided by the total time iscalled __________.(&erage acceleration, nstaneo"s cceleration, niform ccelration)
%+. The change in &elocity of a body in a &ery small inter&al of time(time inter&al tends to 6ero) is called __________.(&erage acceleration, nstantaneo"s cceleration, niformcceleration)
%/. Fhen there is e;"al change in &elocity in e;"al inter&als of time,then acceleration is called __________.(&erage cceleration, nstantaneo"s cceleration, niformcceleration)
%!. >orce is that agent which prod"ces or tends to prod"ce the __________.(Speed in the body, cceleration in the body, Constant &elocity in thebody)
%#. Fhene&er a constant force is applied on a body then it will mo&e
with __________.(Cosntant Speed, Constant Gelocity, Constant cceleration)
%$. The direction of tension in string will always in the __________.(Same direction of applied force, 9pposite direction of applied force,'one of the abo&e)
*3. body of mass 130g is s"spended by a string, the tensionprod"ced in the string is __________. (Ta0e g K 13mNs)
(133', $.# ', $#3 ')
*1. n elastic collision between the two bodies __________.(9nly momet"m of the system is conser&ed, 9nly the 0inetic Dnergy ofthe system is conser&ed, Both the 0inetic Dnergy and 7oment"m ofthe system remain the same)
*. n inelastic collision between the two bodies __________.(9nly momet"m of the system is conser&ed, 9nly the 0inetic Dnergy of
the system is conser&ed, Both the 0inetic Dnergy and 7oment"m ofthe system remain the same)
*%. f a lighter body collides elastically with a massi&e body at rest thenthe lighter bodies will __________.(<ebo"nd, Come to rest, Start to mo&e with a &elocity do"ble of itsinitial)
**. The 0inetic friction will always be __________.(reater than the static friction, D;"al to the Static >riction, 8ess thanthe static >riction)
*+. The "nit of coeOcient of friction in S system is __________.('ewton, =yne, 'one of These ('o nit))
*/. ="e to the rise in temperat"re the coeOcient of ?"id friction will __________.
*!. body of mass m2 slides down a frictionless inclined plane ma0ingan angle ; with the hori6ontal then __________ of the followingstatement is most appropriate.(The component of its weight normal to the plane p"lls it down the
plane, The component of its weight parallel to the plane is balanced bythe normal reaction of the plane, The body mo&es down the plane witha constant acceleration)
*#. f a weight of 1 0g and 1gm are dropped from the same heightsim"ltaneo"sly then __________.(10g will reach the gro"nd earlier, 1gm weight will rach the gro"ndearlier, bother will reach the gro"nd at the same time)
*$. f the &elocity of the body is "niform then __________.(ts speed remains "niform, ts speed and direction of motion willremain the same, ts acceleration is "niform)
+3. f a particle is mo&ing with constant speed in a circle then its&elocity is __________.(ero, niform, Gariable)
Chapter * 4 7otion in Two =imensions
1. The motion of a body along a straight line is called __________.(8inear 7otion, ng"lar 7otion, Gibratory 7otion)
. The motion of a body along a c"r&ed path is called __________.(8inear 7otion, ng"lar 7otion, Gibratory 7otion)
%. The eEample of motion of the body in two dimensions is __________.
(Ball mo&ing along a straight line, Progectile, Train mo&ing along astraight trac0)
*. n proHectile motion the obHect is p"rely "nder the in?"ence of __________.(Centripetal >orce, >orce of ra&ity, <estoring >orce)
+. n proHectile motion (freely falling bodies) sign assigned to theacceleration d"e to gra&ity (g) will always be __________.(Positi&e, 'egati&e, 'one of these)
/. n considering the proHectile motion all the &ectors li0e, &elocity anddisplacement along positi&e y4aEis will be ta0en as __________.
(Positi&e, 'egati&e, 'one of these)
!. ="ring the proHectile motion, the &ertical component of a &elocity __________.(Changes, remains the same, 'one of these)
#. ="ring the proHectile motion, the hori6ontal component of the&elocity __________.
(ncreases, <emains the same, =ecreases)
$. The path of the proHectile is __________.(Parabolic, yperbolic, Dlliptical)
13. ="ring the proHectile motion the acceleration along the hori6ontaldirection will __________.
(=ecrease, ncrease, be ero)
11. n proHectile the acceleration along &ertical direction will __________.(=ecrease, ncrease, <emain the same)
1. The eEpression for the time to reach the maEim"m height of theproHectile is __________.
(Gosin;Ng, Gosin;Ng, Gosin;Ng)
1%. The eEpression for the total time of ?ight of the proHectile is __________.(Gosin;Ng, Gosin;Ng, Gosin;Ng)
1*. The eEpression for maEim"m height reached by the proHectile is __________.
1+. The eEpression for the hori6ontal range of the proHectile is __________.(Gosin;Ng, Gosin;Ng, Gosin;Ng
1/. The eEpression for the maEim"m range of the proHectile is __________.(GoNg, Gosin;Ng, Gosin;Ng)
1!. >or the maEim"m range of the proHectile the angle of ele&ationm"st be __________.(3@, *+@, $3@)
1#. The hori6ontal range of the proHectile is directly proportional to the __________.(nitial Gelocity, S;"are of the initial &elocity, S;"are root of the initial&elocity)
1$. The hori6ontal range of the proHectile is directly proportional to the __________.(sine of the angle of ele&ation, sine of the twice of the angle of
ele&ation, s;"are of the sine of the angle of ele&ation)
3. The eEpression for the traHectory of the proHectile is __________.(aE A Q bE, aNE A bEN, aE A bE)
1. n proHectile motion the small angle of ele&ation prod"ces __________.(>lat TraHectory, igh TraHectory, 8ow traHectory)
. n proHectile motion the large angle of ele&ation prod"ces __________.(>lat traHectory, 8ow TraHectory, igh traHectory)
%. f the angle of ele&ation of the proHectile is $3@ then its hori6ontalrange will be __________.
*. >or the proHectile with high traHectory their time of ?ight will be __________.(Short, 8ong, 'one of these)
+. >or the proHectile with low traHectory, their time of ?ight will be __________.(Short, 8ong, 'one of these)
/. f a proHectile has some hori6ontal range at an angle of ele&ation of1+@ then its range will be the same when the angle of ele&ation ise;"al to __________.(%3@, *+@, !+@)
!. t maEim"m height, the &ertical component of the &elocity of theproHectile is __________.(7inim"m, ero, 7aEim"m)
#. ori6ontal motion with constant &elocity and &ertical motion withconstant acceleration is called __________.(<ectilinear 7otion, ProHectile 7otion, Circ"lar 7otion)
$. ball is thrown hori6ontally from a height of *33m with a m"66le&elocity of 133mNs. t eEperiences a hori6ontal acceleration e;"al to
__________.(+3mNs, $.# mNs, 6ero)
%3. f a shell is -red with the &elocity of $.# mNs at an angle of *+@ thenits hori6ontal range will be __________.
(ero, *.$m, $.#m)
%1. proHectile is -red hori6ontally with an initial &elocity of 3mNs.after % seconds its hori6ontal component of &elocity is __________.(/3mNs, /./!,3 mNs)
%. n proHectile motion __________ of the following angle will res"lt themaEim"m range.(3@, *+@, /3@)
%%. n aeroplane mo&ing hori6ontally with a &elocity of 133mNs, dropsa food pac0et while ?ying at a height of *$3m. The pac0et will stri0e
the gro"nd from the point H"st &ertically below the point of theproHection at a distance of __________.($#3m, 1333, 1$/3 m)
%*. The ball is dropped from the top of a b"ilding sim"ltaneo"sly theball B is thrown hori6ontally then __________.(ball stri0es the gro"nd -rst, ball B stri0es the gro"nd -rst, both ball and B will stri0e the gro"nd sim"ltaneo"sly)
%+. f the la"nch angle of a loc"st is ++@ and its range is 3.# m then theta0e oR speed of a loc"st is __________.( mNs, .$ mNs, %.$ mNs)import NeEtensionsNoogledSenseNoogledSense.cssU
%/. __________ sho"ld be the initial &elocity of a roc0et if it to hit atarget 1333 0m away.(%1%3.+ mNs, %1%.+ mNs, %1.%+ mNs)
%!. f an obHect is mo&ing with constant speed along a circle then itsmotion is __________.(8inear, Gibratory, niform Circ"lar)
%#. The eEpression for the time period of an obHect mo&ing withconstant speed & along a circle of radi"s r is gi&en by __________.(*prN&, prN&, prN&)
%$. The angle s"btended by an obHect with the centre of the circlewhen its is mo&ing from one point to another on its circ"mference iscalled __________.(ng"lar =isplacement, ng"lar Speed, ng"lar cceleration)
*3. The "nit of ang"lar displacement in system of meas"rement is __________.(<adian, mNs, radNs)
*1. The central angle s"btended by an arc whose length is e;"al to theradi"s of the circle is e;"al to one __________.
(<adian, =egree, radient)
*. The relation linear (s) and ang"lar (;) displacements is gi&en by __________.(s K r;, s K rN;, ; K sr)
*%. n the relation s K r;, ; will always be meas"red in __________.(=egrees, <adian, 'one of these)
**. 9ne radian is e;"al to __________.(+.!% degrees, +!.% degrees, +%.! degree)*+. 9ne degree is e;"al to __________.(3.31! rad, 1!.*+ rad, 1.!* rad)*/. The ang"lar displacement or shift per "nit time is called __________.(ng"lar Speed, ng"lar Gelocity, ng"lar cceleration)
*!. 9ne re&ol"tion is e;"al to __________.
(p rad, pN rad, *p rad)
*#. 1 radial is e;"al to __________.(pre&ol"tion, pN rad, p1N re&ol"tion)
*$. The direction of ang"lar &elocity is always along the aEis of rotationand it can be determined by __________.(ead to tail r"le, <ight hand r"le, 'one of these)
+3. f an obHect is rotating in the co"nter4cloc0wise direction then thedirection then the direction of ang"lar &elocity is __________.(nto the plane, 9"t of the plane, 'one of these)
+1. f a particle with instantaneo"s linear &elocity &2 is rotating alongthe circ"mference of circle of radi"s r2 then the relation between
ang"lar &elocity (w) and its linear &elocity (&) is gi&en by __________.(& K wNr, & K rw, w K &r)
+. f a particle co&ers e;"al ang"lar displacement in e;"al inter&al oftime then its ang"lar &elocity is __________.(Gariable, niform, &erage)
+%. The rate of change of ang"lar &elocity is called __________.(ng"lar =isplacement, ng"lar cceleration, 'one of these)
+*. The "nit of ang"lar acceleration in S system is __________.(degNs, mNs, radNs)
++. The relation between linear acceleration (a) and ang"laracceleration (a) of a particle is gi&en by __________.(a K ra, a K aNr, a K ar)+/. The &elocity of the particle tangent to its circ"lar path is called
+!. n circ"lar motion the time period and ang"lar &elocity of a particle
are __________.(=irectly proportional to each other, n&ersely proportional to each,none of these)+#. f a particle is mo&ing with constant speed along the circ"mferenceof a circle then the acceleration possessed by the particle is __________.
(8inear cceleration, Centripetal cceleration, 'one of these)
+$. The direction of centripetal acceleration will always be __________.(Towards the centre of the circle, ways from the centre of the circle)
/3. The force, which prod"ces the centripetal acceleration, is called __________.(Centrif"gal >orce, ra&itational >orce, Centripetal >orce)
/1. The eEpression for centripetal acceleration is gi&en as __________.(&Nr, &Nr, rw)
/. The eEpression for centripetal acceleration in terms of time period(T) is gi&en as __________.(*prNT, *prNT, *prNT)
/%. The force, which 0eeps the body in circ"lar motion and alwaysdirected towards the centre of the circle is called __________.(>orce of ra&ity, Centripetal >orce, Centrif"gal >orce)
/*. The acceleration of the body or particle tangent to the circ"lar pathis called __________.(Centripetal cceleration, Tangential cceleration, 'one of these)
/+. n circ"lar motion the tangential component of acceleration ariseswhen __________.(speed of the obHect is changed, speed of obHect is constant, directionof motion of the obHect is changed)
//. n circ"lar motion the centripetal component of acceleration ariseswhen __________.
(speed of the obHect is changed, speed of the obHect is constant,direction of motion of obHect is changed)/!. Centripetal acceleration and tangential acceleration are always
__________.(Parallel to Dach other, Perpendic"lar to each other, 'one of thse)
/#. car is tra&elling at a constant speed of 3mNs ro"nds a c"r&e ofradi"s 133m. Fhat is its acceleration.
(mNs, %mNs, *mNs)
/$. f the speed of the obHect mo&ing in a circle is do"bled thencentripetal force __________.(<emains the same, Becomes half of its initial &al"e, Becomes fromtimes than its initial &al"e)
(<e;"ire air or another gas to tra&el thro"gh, re;"ire an electric -eld totra&el thro"gh, re;"ire a magnetic -eld to tra&el thro"gh, can tra&elthro"gh a perfect &ac""m)
. The bl"e colo"r of the s0y is d"e to d"e to fact that __________.
(<ed light is absorbed, bl"e colo"r is preferentially scattered, red lightis preferentially scattered, this is the nat"real colo"r)
%. The wa&elength 13333 @ belong to __________.
(nfra red spectr"m, ltra &iolet spectr"m, &isible range, green light)
*. 7onochromatic green light has a wa&elength of +3 nm in air. The
wa&elength of this light inside glass of refracti&e indeE 1.+ isapproEimately.
(%33nm, %*3nm, +3nm, !#3nm)
+. The property of light wa&es thath leads to the phenomenon of colo"ris their __________.
(Gelocity, mplit"de, "ality, Fa&elength)
/. f Plan02s constant h K /./+ E 134%* XN6. The energy associatedwith light with a wa&elength of 1/3nm is __________.
(1.* E 1341# X, 1.## E 1341# X, 1.* E 1341+ X, 1.* E 1341+ X)
#. Two light wa&es meet at time when one has the instantaneo"samplit"de and the other has the instantaneo"s amplit"de B. Theircombined amplit"de is __________.
( M B, between M B and A( M B), A B, ndeterminate)
$. 7aEwell based his theory of electromagnetic wa&es on the
1*. The loc"s of all points in the same state of &ibrations is 0nown as __________.
(alf period 6one, a half wa&e 6one, a wa&e front, none of thse)
1+. __________ is in&alid for a photon.
(ts mass is hn, it has 6ero rest mass, all its energy is 5.D, itsmoment"m is hnNc)
1/. __________ of the following is not a property of light wa&es.
(they transfer energy from one place to another, They can tra&elthro"gh &ac""m, They are trans&erse wa&es, They tra&el at the samespeed thro"gh glass and water)
1!. The phenomenon of interference of light was -rst demonstrated by
(Gelocity of light in gases, wa&elength of monochromatic light,thic0ness of &ery thin obHects, ill"minating power of light)
. __________ of the following is not tr"e for interference of light.
(The two wa&es sho"ld be of same amplit"de, the two wa&es sho"ld bephase coherent, the two wa&es sho"ld tra&el in the opposite directionthro"gh the medi"m, the two wa&es sho"ld be monochromatic)
%. Two monochromatic wa&es of same wa&elength are tra&ellingthro"gh a medi"m. They can interfere destr"cti&ely. Pro&ided theirpath diRerence is __________.
(l, l, +N l, +l)
*. =o"ble slit arrangement is s"ggested by :o"ng in order to obtain __________.
+. n :o"ng2s do"ble slit arrangement, the bright fringes obtained are __________.
(9f "niform intensity, of non "niform width, colo"red, circ"lar)
/. >or constr"cti&e interference the path diRerence sho"ld be
__________.
(ero or integral m"ltiple of wa&elength, only integral m"ltiple ofwa&elength, 6ero or m"ltiple of wa&elength, odd m"ltiple ofwa&elenght)
!. The two light wa&es can interference destr"cti&ely if __________.
(They reach a point in phase, they reach a point o"t of phase by p
radian, they are tra&eling thro"gh a medi"m in opposite direction,none of these is tr"e)
#. 'ewton2s rings can be obtained by "sing a __________.
(Plano con&eE lens of small focal length, plano con&eE lens of &erylarge focal length, conca&e lens of large focal length, ?at glass slab)
$. n 'ewton2s rings the central angle is __________.
(lways bright, always dar0, can be bright or dar0, of bl"e colo"r)
%3. The conditions for the prod"ction of constr"cti&e and destr"cti&einterference are re&ersed d"e to the fact that on stri0ing the thin -lm
__________.
(Two rays of splitted light "nder go phase change of 1#3@, 9ne of tworays of splitted light "ndergo phase change of 1#3@, light is diRracted,light is polari6ed)
%1. Fhen electromagnetic wa&es stri0e the bo"ndary of densermedi"m they are __________.
(<e?ected, in phase, <e?ected o"t of phase by 1#3@, re?ected, theyare completely abosrbed)
%*. >resnel2s type diRraction is obser&ed when __________.
(9nly screen is placed at -nite distance, 9nly so"rce is placed at -nitedistance, Both so"rce and screen are at -nite distance, 'either so"rcenor screen is at -nite distance)
%+. >ra"nhoRer2s diRraction is obser&ed when __________.
(9nly screen is placed at -nite distance, so"ce is placed at -nitedistance, neither so"rce nor screen is at -nite distance)
%/. n >ra"nhoRer2s diRraction wa&e front "sed is __________.
(Spherical, Circ"lar, Plane, Conical)
%!. n diRraction pattern of monochromatic light the bright bandsformed are __________.
(9f "niform intensity, of non4"niform intensity, of "niform width, are ofdiRerent colo"rs)
%#. The points of constr"cti&e interference of light are __________.
(lways bright, may be bright or dar0, always dar0, neither bright nordar0)
%$. The diRraction obser&ed by diRraction grating can also be termedas __________.
*3. The grating "sed to obser&e, diRraction of &isible light can ha&eapproEimately __________.
(%33 lines per cm, %333 lines per cm, 1+333 lines per cm, %3 lines percm)
*1. [4ray diRraction can be obser&ed by "sing __________.
(=iRraction rating, <oc0 salt crystal, Con&eE lens, 7ichlsons2sinterferometer)
*. The phenomenon of 'ewton2s rings can be "sed to chec0 the __________.
(Fa&elength of monochromatic light, phase coherence of two so"rces,?atness of any glass s"rface, &elocity of light)
*%. Two so"rces of light are said to be coherent if __________.
(they prod"ce wa&es of the same wa&e length, they ha&e the sameamplit"de of &ibration, they prod"ce wa&es in the medi"msim"ltaneo"sly, they prod"ce wa&es of the same amplit"de)
**. s the order increases, the width of a dar0 band in diRractionpatterns __________.
(ncreases, =ecreases, =oes not change, becomes in-nity)
*+. The path diRerence corresponding to a phase diRerence of p radianis __________.
(l, lN, lN* l)
*/. __________ of the following phenomenon can not be eEplained onthe particle nat"re of light.