The velocity of all radio waves in free space is 3 × 10 8 m…

Physics Electromagnetic Wave General MCQ (Single Correct)

The velocity of all radio waves in free space is 3 × 10 8 m/s. The frequency of a radio wave of wavelength 150 m is :

50 kHz

2 kHz

2 MHz

1 MHz

Text Solution

Verified by Experts

The correct answer is:

Here : Velocity of electromagnetic waves in free space and wavelength

v = 3 10 8 ms and λ = 150 m

Using the relation for the frequency of radio waves is given by

v= = 2 × 10 6 Hz - 2 MHz

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