Question

The length of the most effective transmitting antenna is equal to one–fourth the wavelength of the broadcast wave. If a radio station has an antenna 4.5 meters long then what is the broadcast frequency of the radio station?

A) 1.4 x 10^–8 Hz 

B) 6.0 x 10^–8 Hz 

C) 1.7 x 10⁷ Hz 

D) 6.7 x 10⁷ Hz 

E) 3.0 x 10⁸ Hz

Answer 1

The correct option is: (C) 1.7 x 10⁷ Hz 

Explanation:

λ = 4*4.5, Radio wave is EM and travels at light speed. Use c = f λ and solve.