This document contains details about an Islamic senior high school student group including the names of group members and 25 multiple choice questions about electromagnetic waves and the electromagnetic spectrum. The questions cover topics like the scientist who developed electromagnetic theory, properties of electromagnetic waves, order of different parts of the electromagnetic spectrum by frequency and wavelength, uses of different parts of the spectrum, and calculations involving wavelength, frequency and speed of electromagnetic waves.

1. By : GROUP 2
Class : X-1
IslaMIC sENIOR HIGH sCHOOl sIdOaRjO
2011-2012

2. 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)

3. 1. The scientist who analyzed mathematically the theory of
electromagnetic fields and predicted that visible light was an
electromagnetic phenomenon was…
A. James Clerk Maxwell
B.Albert Abraham Michelson
C.Heinrich Hertz
D.Max Planck
E.Michael Faraday

4. 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 speed
B.Electric current and voltage
C.Electric and magnetic components
D.Magnetic component and voltage
E.Magnetic flux and electric potential

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

6. 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

7. 5. Electromagnetic wave for example light and
Electromagnetic wave for example light
and waves can travel through interplanetary
radio radio waves can travel through
and interstellarand interstellar space from the
interplanetary space from the sun and stars to
sun and stars to eart.It means ….
earth. It means ….
D. An electromagnetic wave is not
mechanical wave and does not
require any medium for propagating.

8. 6. Given some electromagnetic spectra as follows
1. infrared
2. television wave
3. ultraviolet radiation
4. gamma rays
The correct order of decreasing frequency of the
electromagnetic spectra consists of….
• A. 4, 3, 1, 2

9. Proof :
• Sequence electromagnetic wave spectrum ranging from
the smallest frequency to the greatest frequency :
1. radio wave
2. televison wave
3. micro wave
4.infra red
5. light
6. ultraviolet
7. x-ray
8. gamma

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

11. 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)

12. 8. The electromagnetic spectrum, that is usually used
in technology of radio detection and ranging (radar)
is… A.Radio waves
B.Microwaves
C.Infrared
D.Gamma rays
E.Television
wave

13. 9. The electromagnetic spectrum having
the largest frequency is…
A.Gamma ray
B.X-ray
C.Infrared
D.Ultraviolet Radiation
E.Radio wave

14. 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 m
B.300 m
C.3,3 m
D.3,0 m
E.1,0 m

15. Because :
We have : = 100 MHz = 10 8 Hz
f
c = 3 x 10 8
Question : ƛ = . . . ?
Answer : c =ƛ. f
3 x 10 8 = ƛ . 10 8
= ƛ
c = rapid propagation
3,0 m = ƛ of electromagnetic
ƛwave
= wave length
the VHF wave length of the
VHF wave is 3,0 m f = frequency

16. 11. Based som exper i m
e ent s, el ect r omagnet i c waves have
som pr oper t i es, am
e ong ot her s ar e as f ol l ows,
except . . . . . . . . .
a. They r equi r e a m edi um
b. They ar e not i nf l uenced by t he el ect r i cf i el d
c. The oci l l at i on i s per pendi cul ar t o t he
pr opagat i on
d. They can be r ef l ect ed and r ef r act ed
e. They can exhi bi t pol ar i zat i on
The answer i s:
a. They requi re a m um edi
Thi s r esponse was conf i r m ed
by sever al el ect r omagnet i c pr oper t i es as f ol l ows:
~ can pr opagat e i n a vacuum
~ i s t he t r ansver se wave
~ can exper i ence a pol ar i zat i on , et c
and t her e ar e no pr oper t i es t hat says ” t hey r equi r e a
medi um . For m e det ai l s can be f ound on page 115 .
” or

17. 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 difracted
d. It can be bent by both electric and
magnetic fields
e. It requires a medium for propagating
The answer is:
c. It can interfere and be difracted

18. 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 electricfields
To the correct statement (s) dealing with the properties of electromagnetic
waves is (are).....
a. 1, 2, and 3
b. 1 and 2
c. 2 and 4
d. 4
e. 1, 2, 3, and 4
The answer is:
c. 2 and 4
to prove the answer, the same as the previous problem.

19. 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

20. 15. Consider the following statements
1)In the air, its speed is
2)It can propagate in a vacuum
3)It influences the film
4)It is longitudinal wave
The statements that are properties of
electromagnetic waves are……
a.1 and 2
b.1,2, and 3
c.1 and 4
d.2,3 and 4
e.3 and 4

21. 16. The electromagnetic spectrum that
has thev smallest wavelength is…………
a.Gamma ray
b.Radio wave
c.Infrared
d.X ray
e.Ultraviolet radiation

22. 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 speed
b. Ultraviolet radiation has the smallest speed
c. Infrared has the largest speed
d. Ultraviolet radiation gas a speed the magnitude of which is between
gamma ray and infrared
e. The three electromagnetic waves have the same speed
The answer is ..
a. Infrared has the largest speed
Because infrared has the largest wave length.

23. 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, X
b. U, X, I
c. I, X, U
d. I, U, X
e. X, I, U
The answer is..
d. I, U, X

24. 19. X ray has a wave length which is…
a. Larger than 700 nm
b. Between 400-700 nm
c. Very larger than 700 nm
d. Equal to 400 nm
e. Much smaller than 400 nm
The answer is …
e. Much smaller than 400 nm
Because,
1 nm = 10-9 m

25. 20. The correct order of increasing wavelenght of the following electromagnetic
spectra is...
D. X ray,ultraviolet radiation, visiblelight, infrared
Because 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

26. 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

28. 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 = 100.000Hz
Question : … t?
Answer : t = T . n
= 1 . 100.000 = 20 s
5 x 103