Waves questions
1337 published questions with worked solutions.
- Doppler's effect in sound is due to
- A siren placed at a railway platform is emitting sound of frequency 5 kHz. A passenger sitting in a moving train A records a...
- A source of sound emits a frequency of 400 Hz, but the listener hears it to be 390 Hz. Then,
- Doppler shift in frequency does not depend upon
- A source of sound of frequency 600 Hz is placed inside water. The speed of sound in water is 1500 m ,s^ -1 and in air is 300 m...
- If a particle is travelling with a speed of 0.9 of the speed of sound and is emitting radiations of frequency 1 kHz and moving...
- A train moves towards stationary observer with a speed 34 m ,s^ -1 . The train sounds a whistle and its frequency registered by...
- The frequency of a whistle is 300 Hz. It is approaching towards an observer with a speed 1/3 the speed of sound. The frequency of...
- The wavelength is 120 cm when the source is stationary. If the source moving with relative velocity of 60 m ,s^ -1 towards the...
- A car sounding its horn at 480 Hz moves towards a high wall at a speed of 20 m ,s^ -1 , the frequency of the reflected sound...
- A source of sound with frequency 256 Hz is moving with a velocity v towards a wall. When the observer is between source and the...
- Two cars are moving on two perpendicular roads towards a crossing with uniform speeds of 72 km ,h^ -1 and 36 km ,h^ -1 . If first...
- A table is revolving on its axis at 5 revolutions per second. A sound source of frequency 1000 Hz is fixed on the table at 70 cm...
- The speed of sound in air is v. Both source and observer are moving towards each other with equal speed u. The speed of wind is w...
- The extension in a string obeying Hooke's law is x. The speed of transverse waves in the stretched string is v. If the extension...
- A wave of frequency 400 Hz has a wave velocity of 300 m ,s^ -1 . The phase difference between two displacements at a certain...
- A stretched rope having linear mass density 5 10^ -2 kg ,m^ -1 is under a tension of 80 N. The power that has to be supplied to...
- Sound waves of wavelength travelling in a medium with a speed of v m/s enter into another medium, where its speed is 2v m/s....
- The temperature at which the speed of sound in air becomes double of its value at 0^ C is
- The speed of sound in a mixture of 1 mole of helium and 2 mol of oxygen at 27^ C is
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