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Questions  

Electromagnetic waves of frequency 1.2×1015Hz enter into water and subsequently into glass from Vacuum. Which of the following graphs correctly represent the variation of frequency 'f' with medium? ( given that indices of refraction for water and glass are 43 and 32 respectively)

a
b
c
d

detailed solution

Correct option is A

Frequency remains unchanged as electromagnetic waves pass from one medium to other

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