Fisika

By : GROUP 2

Class : X-1

ISLAMIC SENIOR HIGH SCHOOL sidoarjo

2011-2012

Member’s name :

Dita Megah Sekar Sari (07)Dwi Anita Ningrum (08)Dwi Kurniati Khairunnisa’ (09)Ega Khansa Alifa (10)Elisa Kusno (11)Fryan Chentyo Joelia M. (12)Hena Machruzar (13)Henna Asokawati (14)

1. The scientist who analyzed mathematically the theory of electromagnetic fields and predicted that visible light was an electromagnetic phenomenon was…

A. James Clerk MaxwellB.Albert Abraham MichelsonC.Heinrich HertzD.Max PlanckE.Michael Faraday

2. Consider the following figure.

The figure shows an illustration of the propagation of an electromagnetic wave. In this case, X and Y represent the oscillations of…A.Electric current and average speedB.Electric current and voltageC.Electric and magnetic componentsD.Magnetic component and voltageE.Magnetic flux and electric potential

3. The speed of electromagnetic waves is determined by the vacum permeability and permittivity. It can be formulated as…

B.

4. The following statements are the properties of electromagnetic waves, except…

A.Electromagnetic waves are able to propagate in a vacuum

B.Electromagnetic waves are transverse wave

C.The frequency of an electromagnetic wave is equal to that light

D.Electromagnetic waves can be polarized

E.Electromagnetic waves obey the law of reflection

5. Electromagnetic wave for example light and radio waves can travel through interplanetary and interstellar space from the sun and stars to eart. It means ….

D. An electromagnetic wave is not mechanical wave and does not require any medium for propagating.

5. Electromagnetic wave for example light and radio waves can travel through interplanetary

and interstellar space from the sun and stars to earth. It means ….

6. Given some electromagnetic spectra as follows 1. infrared 2. television wave 3. ultraviolet radiation 4. gamma raysThe correct order of decreasing frequency of the electromagnetic spectra consists of….

• A. 4, 3, 1, 2

Proof :• Sequence electromagnetic wave spectrum ranging from

the smallest frequency to the greatest frequency :1. radio wave2. televison wave3. micro wave4.infra red5. light6. ultraviolet7. x-ray8. gamma

7. Among the following radio waves, the one which has the largest wave length is…..

Proof : NO FREQUENCY (Hz) LONG WAVE

1. Very Long Frequency (VLF)

2. Low Frequency ( LF)

3. Medium Frequency (MF)

4. High Frequency (HF)

5. Very High Frequency (VHF)

6. Ultra High Frequency ( UHF)

8. The electromagnetic spectrum, that is usually used in technology of radio detection and ranging (radar) is…

A.Radio waves

B.MicrowavesC.InfraredD.Gamma

raysE.Television

wave

9. The electromagnetic spectrum having the largest frequency is…

A.Gamma rayB.X-rayC.InfraredD.Ultraviolet RadiationE.Radio wave

10. A radio station using the VHF wave broadcasts a program at frequency 100 MHz. If c = 3 x 108

m/s, the VHF wave length of the VHF wave is…

A.333 mB.300 mC.3,3 mD.3,0 mE.1,0 m

Because :

We have :

c = 3 x 108

f = 100 MHz = 108 Hz

Question :ƛ = . . . ?Answer : c = ƛ . f

3 x 108 = ƛ . 108

= ƛ

3,0 m = ƛc = rapid propagation of electromagnetic wave

ƛ = wave length

f = frequencythe VHF wave length of the VHF wave is 3,0 m

11. Based some experiments, electromagnetic waves have some properties, among others are as follows, except.........

a. They require a mediumb. They are not influenced by the electricfieldc. The ocillation is perpendicular to the

propagationd. They can be reflected and refractede. They can exhibit polarization

The answer is:a. They require a mediumThis response was confirmed This response was confirmed

by several electromagnetic properties as follows:by several electromagnetic properties as follows:~ ~ can propagate in a vacuumcan propagate in a vacuum~ ~ is the transverse waveis the transverse wave~ ~ can experience a polarizationcan experience a polarization, etc, etc

and there are no properties thatand there are no properties that says says ””theythey require a require a medium”. Fmedium”. For more details can be found on page 115or more details can be found on page 115..

12. Of the followings, the one which is the property of an electromagnetic wave is..........

a. It can be difracted but cannot interfere

b. It can be polarized but cannot interfere

c. It can interfere and be difractedd. It can be bent by both electric and

magnetic fieldse. It requires a medium for

propagating

The answer is:c. It can interfere and be difractedto prove the answer, the same

as the previous problem.

13. Consider the following statements(1) It does not propagate through a vacuum(2) Its speed is equal to the speed of light(3) It is electrically charged(4) It is produced by magnetic and electricfieldsTo the correct statement (s) dealing with the properties of electromagnetic waves is (are).....

a. 1, 2, and 3b. 1 and 2c. 2 and 4d. 4e. 1, 2, 3, and 4

The answer is:c. 2 and 4to prove the answer, the same as the previous problem.

14. The following are the properties of an electromagnetic wave, except……

a.Its speed does not depend on the kind of its medium

b.It can be reflected

c.Its highest speed occurs in a vacuum

d.It can be polarized

e.It can propagate in a vacuum

15. Consider the following statements 1)In the air, its speed is 2)It can propagate in a vacuum3)It influences the film4)It is longitudinal wave

The statements that are properties of electromagnetic waves are……a.1 and 2b.1,2, and 3c.1 and 4d.2,3 and 4e.3 and 4

16. The electromagnetic spectrum that has thev smallest wavelength is…………

a.Gamma rayb.Radio wavec.Infraredd.X raye.Ultraviolet radiation

17. Gamma ray, infrared, and ultraviolet radiation are electromagnetic waves. The correct statement dealing with the speeds of the electromagnetic waves is….

a. Gamma ray has the largest speedb. Ultraviolet radiation has the smallest speedc. Infrared has the largest speedd. Ultraviolet radiation gas a speed the magnitude of which is between

gamma ray and infrarede. The three electromagnetic waves have the same speed

The answer is ..a. Infrared has the largest speedBecause infrared has the largest wave length.

18. If ultraviolet radiation, infrared, and X ray are represented by U, I, and X respectively, the correct order of increasing energy of those electromagnetic spectra is…

a. U, I, Xb. U, X, Ic. I, X, Ud. I, U, Xe. X, I, U

The answer is..d. I, U, X

19. X ray has a wave length which is…a. Larger than 700 nmb. Between 400-700 nmc. Very larger than 700 nmd. Equal to 400 nme. Much smaller than 400 nm

The answer is …e. Much smaller than 400 nmBecause,1 nm = 10-9 m

20. The correct order of increasing wavelenght of the following electromagnetic spectra is... D. X ray,ultraviolet radiation, visiblelight, infraredBecause the largest length is infrared, and the smallest lenght is X ray

21. An electromagnetic spectrumthat can be seen is... C. Visible light

22. The correct order of decreasing energy of the following electromagnetic spectra is... (A.Gamma ray, X ray, infrared) Because gammaray is the largest frequency,and in Planck law, the frequency can influence energy, energy is proportional to the frequency

23. Among the following colours of light, the correct order of decreasing frequency is… C. blue; green; yellow; red.

Warna Panjang gelombang x 10 -7(m) Frekuensi x 10 -14(Hz)

Ungu 3,90 - 4,55 7,69 - 6,59

Biru 4,55 - 4,92 6,59 - 6,10

Hijau 4,92 - 5,77 6,10 - 5,20

Kuning 5,77 - 5,97 5,20 - 5,03

Jingga 5,97 - 6,22 5,03 - 4,82

Merah 6,22 - 7,80 4,82 - 3,84

25. A radio station using the VHF wave broadcasts a program at a frequency of 100 MHz. If c = 3x108 m/s, the time required by the VHF wave to travel a distance of 60km is…

Because : We Have: T = S : V = 60.000 3x108

= 1 . 5 x 103

n = 100KHz = 100.000HzQuestion : … t?Answer : t = T . n = 1 . 100.000 = 20 s 5 x 103