Test SeriesFree PYQsExamsPricing

MHT CET Physics question

PhysicsWavesMHT CET

The pitch of the whistle of an engine appears to drop by 20% of original value when it passes a stationary observer. If speed of sound in air is 350 m/s, then speed of engine in m/s is [MHT-CET 2009]

Answer: (B)

Solution

Taking the apparent frequency as of the true frequency for the receding engine, gives

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-068737