An observer moves towards a stationary source of sound with a speed 1 \/ 5^{\text{th }} of the speed of sound. The wavelength and frequency of the source emitted are \lambda and {\f} respectively. The apparent frequency and wavelength recorded by the observer are respectively :

AIPMT 2003 Physics and Chemistry Paper

Question : 15 of 100

Marks: +1, -0

An observer moves towards a stationary source of sound with a speed 1∕5‌th ‌ of the speed of sound. The wavelength and frequency of the source emitted are λ and f respectively. The apparent frequency and wavelength recorded by the observer are respectively :

1.2f,1.2λ
1.2f,λ
f, 1.2λ
0.8f,0.8λ

Validate

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