Radio waves of wavelength 3 cm have a frequency of:
A) 1 MHz
B) 9 MHz
C) 100 MHz
D) 10,000 MHz
E) 900 MHz

Question

Quizplus · Accepted Answer

The frequency of radio waves can be calculated using the formula $f = \frac{c}{\lambda}$, where $f$ is the frequency, $c$ is the speed of light (approximately $3 \times 10^8$ m/s), and $\lambda$ is the wavelength. Converting 3 cm to meters gives 0.03 m. Thus, $f = \frac{3 \times 10^8}{0.03} = 10 \times 10^9$ Hz, or 10,000 MHz.

Radio Waves of Wavelength 3 Cm Have a Frequency Of