Question

What is the frequency of a radio wave of wavelength 150 m if the velocity of radio waves in free space is 3 × 10^8 m s–¹ ?​

Answer 1

The frequency of a radio wave with a wavelength of 150 m in free space is 2 MHz, calculated using the formula c = fλ and substituting the given values into the equation.

Step-by-step explanation:

The frequency of a radio wave can be calculated using the formula c = fλ, where c is the speed of light, λ is the wavelength, and f is the frequency of the wave. For radio waves in free space, the speed of light c is 3 × 108 m/s. Given a wavelength of 150 m, you can rearrange the formula to solve for the frequency f as f = c / λ.

Solution:

f = c / λ
f = (3 × 108 m/s) / (150 m)
f = 2 × 106 s-1 or f = 2 MHz (Megahertz)

Therefore, the frequency of a radio wave with a wavelength of 150 m is 2 MHz.

Answer 2

frequency =speed/wavelength

=(3*10^8)/150

=2×10^6