The amplitude modulated (AM) radio wave bends appreciably round the corners of a 1 m x 1 m board but the frequency modulated (FM) wave only negligibly bends. If the average wavelengths of AM and FM waves are λ and λf,

(a) λaf

(b) λaf

(c) λa < λf

(d) we don't have sufficient information to decide about the relation of λa and λf,

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1 Answers

The correct answer is (a) λa >λ 

EXPLANATION:   

The wave having greater wavelength will bend more.    

 In fact, the frequency of the FM waves is nearly 100 times more than the AM waves hence the wavelength of the AM waves is 100 times more than FM waves.

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