Test SeriesFree PYQsExamsPricing

MHT CET Physics question

PhysicsWavesMHT CET

The pitch of the whistle of an engine appears to drop to th of original value when it passes a stationary observer. If the speed of sound in air is , then the speed of engine is [MHTCET 2015, MHTCET 2015]

Answer: (B)

Solution

Taking the apparent pitch as of the true frequency for the receding engine, gives ; 35, 105 and 140

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-068680