Direction: Answer the following items by selecting the letter that corresponds
to your answer. Use the space provided.
1. Which electromagnetic wave carries more energy than the others?
A. Microwaves B. Radiowaves C. UV radiation D. Visible light
2. What is the wavelength of the wave with a frequency of 3 x 10° Hz?
A.1 x 10-1 m B. 1x 101 m C. 1 x 10-2 m D. 1x 102 m
3. What is the range of frequencies are our eyes sensitive to?
A. 3 x 10 to 3 x 1011 Hz
B. 3 x 1011 to 4 x 1014 Hz
C.4 x 1014 to 7.5 x 1014 Hz
D. 7.5 x 1014 to 3 x 1016 Hz
4. Which two waves lie at the ends of the visible spectrum?
A. Infrared and Ultraviolet rays
B. Radio waves and Microwaves
C. Radio waves and X-rays
D. X rays and Gamma rays
5. A certain radio station broadcasts at a frequency of 675 kHz. What
is the wavelength of the radio waves?
A.280 m
B. 324 m
C. 400 m D. 444 m
6. Which property spells the difference between infra-red and
ultraviolet radiation?
A. Color B. Speed in vacuum C. Wavelength D. None of the above
7. What is the frequency of the radiowave with wavelength of 15 m?
A.2 x 105 Hz B. 2 x 106 Hz C. 2 x 107 Hz D.2 x 100 Hz
8.The energy of a photon is directly proportional to its wave frequency.
What will happen to the energy if the frequency is doubled?
A. Halved B. Doubled
C. Tripled
D. Remained the same​