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JEE Advanced Model Paper 12 with solutions for online practice

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Question : 16

Total: 60

A car moves towards a hill with speed Vc . It blows a horn of frequency ’f’ which is heardby an observer following the car with speed V0 . The speed of sound in air is 'V'

The wavelength of sound reaching the hill is
V
f
The wavelength of sound reaching the hill is
V−Vc
f
The beat frequency observed by the observer is
2Vc(V+V0)f
V2−Vc2
The wavelength of sound of horn directly reaching the observer is
V+Vc
f

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