6. What is the frequency of a radio wave with a wavelength of 2.2 m?
A. 3.0 x 10⁸ Hz
B. 1.36 x 10⁸ Hz
C. 7.3 x 10`⁹ Hz
D. 2.2 x 10⁸ Hz
7. What is the speed of electromagnetic wave in a vacuum?
A. 3.0 x 10⁸m/s
B. 3.0 x 10⁹m/s
C. 4.0 x 10⁸ m/s
D. 4.0 x 10⁹ m/s
8. Which of the following EM waves carries more energy than the others?
A. microwaves
B. radio waves
C. UV rays
D. visible light
9. What can electromagnetic waves travel through that mechanical waves cannot?
A. Air
B. Wood
C. Water
D. Vacuum
10. What is the relationship between wavelength and frequency?
A. There is an equal value of frequency and wavelength of electromagnetic waves.
B. There is a direct relationship between the frequency and wavelength of electromagnetic waves.
C. There is an inverse relationship between the frequency and wavelength of electromagnetic waves.
D. Cannot be determined.​