An engine is moving on a circular path of radius 200 m with a speed of 15 m/s. What will be the frequency observed by an observer standing at rest, at the centre of the circular path, when the engine blows a whistle of frequency 250 Hz?

An engine is moving on a circular path of radius 100 m with a speed of 20 m/s. What will be frequency noted by an observer standing stationary at the centre of the circular path when the engine blows a whistle of frequency 500 Hz ?

An engine is moving on a circular track with a constant speed. It is blowing a whistle of frequency 500 Hz . The frequency received by an observer standing stationary at the centre of the track is

An observer is moving on a circular path of radius r with speed V_(0) around source kept at centre. The apparent frequency observed by observer is (n is actual frequency)

An electron is revolving along a circular path of radius 1 À with a frequency (10^15) Hz. What is the associated magnetic moment?

A whistle of frequency 540 Hz rotates in a circle of radius 2 m at a linear speed of 30 m/s. What is the lowest and highest frequency heard by an observer a long distance away at rest with respect to the centre of circle. Take speed of sound in air as 330 m/s. Can the apparent frequency be ever equal to actual?

A source is moving with a constant speed of 10 m/s on a circular track of 200 m. It emits a sound of frequency 200 Hz. A listener stands at the centre of the circular track. The frequency received by the listener is (velocity of sound = 340 m/s)

A source is moving with a constant speed of 10 m/s on a circular track of 200 m. It emits a sound of frequency 200 Hz. A listener stands at the centre of the circular track. The frequency received by the listener is (velocity of sound = 340 m/s)

A train has just completed a U-curve in a track which is a semicircle. The engine is at the forward end of the semi-circular part of the track while the last carriage is at the rear end of the semi-circular track. The driver blows a whistle of frequency 200 Hz. Velocity of sound is 340 m//s . Then the apparent frequency as observed by a passenger in the middle of a train when the speed of the train is 30 m//s is

A train has just completed a U-curve in a trach which is a semi circle. The engine is at the forward end of the semi circular part of the trach while the last carriage is at the rear end of the semi circular track. The driver blows a whistle of frequency 200 Hz. Velocity of sound is 340(m)/(s) . Then the apparent frequency as observed by a passenger in the middle of the train, when the speed of the train is 30 m/s, is