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in Physics by (71.1k points)

Sound waves of length λ travelling with velocity v in a medium enter into another medium in which their velocity is 4 v. The wavelength in 2nd medium is

(a) 4λ 

(b) λ 

(c) λ/4 

(d) 16 λ

1 Answer

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Best answer

Correct option: (a) 4λ

Explanation: 

From v = n λ, we find λ ∝ v because freq. n is constant. Therefore, new wavelength = 4 λ.

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