A policeman on duty detects a drop of `10%` in the pitch of the horn of a moving car as it crosses him. If the velocity of sound is `330 m//s`, the speed of the car will be

A policeman on duty detects a drop of 10% in the pitch of the hom of a motor car as it crosses him. If the velocity of sound is 330 m/s calculate the speed of car?

A policeman on duty detects a drop detects a drop of 15% in the pitch of the horn of a motor car as it crossed him. If the velocity of sound is 330metre //sec ., calculate speed of the car.

A gatekeeper in a colony observes a drop of 10% in the pitch of a motor car as it crosses him. Calculate the speed of motor car if velocity of sound is 332 m/s.

The speed limit for the vehicle on a road is 108 km//hr . A policeman detects a drop of 25% in the pitch of the horn of a car as it passes him. Is the policeman justified in punishing the car driver for crossing the speed limit? (Velocity of sound = 350 m//s .)

Explain the formatin of stationary wave by analytical method. Show that nodes and antinodes are equally spaced in a stationary wave. The speed limit for a vehicle on road is 120 km/hr. A policeman detects a drop of 10 % in the pitch of horn of a car as it passes him. Is the policeman justified in punishing the car driver for crossing the speed limit ? ( Given : Velocity of sound = 340 m/s )

A person feels 2.5% difference of frequency of a motor-car horn. If the motor-car is moving towards the person and the velocity of sound is 320 m/s, then the velocity of motor car will be (approximately)