Chapter5 Mcq

7/23/2019 Chapter5 Mcq

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Exercises

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Application of reflection of light

1. Plane irror

Plane irror is locate! "elo# the scale to a$oi! %%%%%%%%%%%%%%%

&t is to o"tain ore acc'rate rea!ing.

Plane irror periscope:

&t is a!e of t#o plane irror #hich is at %%%%%% an! the

angle of inci!ence is also %%%%%%%

(isa!$antage: iage pro!'ce is 'nclear "eca'se of

o$erlapping of the iages.

)ol'tion: *hange plane irror to pris periscope.

+alei!oscope

a!e of an, plane irrors #hich #ill pro!'ce colorf'l iages.

2. *on$ex irror

*on$ex irror has a #i!er %%%%%%%%

&t can "e 'se! as car rear irror or anti theft

irror at the corner of the shop.

3. *onca$e irror -se! in hea!laps of the car.

)all lap is place! at the %%%%%%%%%%%%% of the irror to pro!'ce

parallel light "ea #hich can tra$el to a f'rther !istance.

-se! as agnif,ing irror as #ell.

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1.o'rist at a "each o"ser$ing the s'nset.

Explain #h, the to'rist can still a"le

to see the s'n e$en tho'gh it has

alrea!, set. /4 ars

2.(iagra sho#s Ali stan!ing at the si!e

of the pon!. Ali can see the iage of

the fish an! the iage of the !ragon

fl, as sho#n in the !iagra.

Explain ho# he can see the iage of

the fish an! the iage of the !ragon

fl, ", 'sing ph,sics phenoenon. /4

ars

3.Explain #h, a piece of paper "'rns

#hen place! 'n!er a con$ex lens

aie! to#ar!s hot s'n ra,. /4 ars

4.Explain ho# ,o' #o'l! estiate the

focal length of a con$ex lens in ,o'r

school la"orator,. /4 ars

5.o' are gi$en t#o con$ex lenses ) an!

#here lens ) has a longer focal

length than lens . -sing this t#o

lenses explain ho# ,o' #o'l! ae a

siple astronoical telescope. /4ars


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1. )'perior irage occ'rs o$er col!

#ater s'rface an! sno#. -sing

ph,sics concept explain #h, the

o"ser$er can onl, see the iage of

ship. /4 ars

2. (iagra sho#s a ra, of light

!irecte! perpen!ic'larl, at a si!e of

the sei circ'lar glass "loc. he

ra, passes thro'gh tht glass "loc to

a point "efire lea$ing the glass

"loc. he angle of inci!ence in the

glass "loc is 30. Explain ho# total

internal reflection occ'rs in the

!iagra /4 ars

3. hen !ri$ing a car on a hot !a,

,o' a, see a irage on the roa!.

Explain ho# irage occ'rs. /4

ars

4. Explain ho# !iaon! is sparling

#hen the ra, of light passes

thro'gh /4 ars

5. &t is no#n that the s, is re! !'ring

s'nset an! the foration of rain"o#

on the s, al#a,s appear after

raining. Explain. /4 ars

6. Explain ho# an optical fi"re #ors.

/4 ars


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Chapter5 Mcq

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