Question

A broadcasting station produces radio waves of wavelength 800 m. Determine their frequency (speed of air is 3 x 10⁸ms^-1

Answer 1

f = 3 x 10⁸ 
          λ
     3 x 10⁸  
       800
= 0.00375 x 10⁸ Hz
= 3.75 x 10⁵ Hz