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Two waves of frequencies 6 Hz and 10 Hz are superposed. The beat frequency produced is

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Important Questions on Waves

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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>Assignment Set-2>Q 48
Two waves of wavelengths 99 cm and 100 cm produce 4 beats per second. Velocity of sound in the medium is
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>Assignment Set-2>Q 49
A tuning fork produces 2 beats per second when sounded with another tuning fork of frequency 250 Hz. It gives the same number of beats per second when loaded with wax. The initial frequency of 1st tuning fork is
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>Assignment Set-2>Q 50
Two waves of frequencies 50 Hz and 45 Hz are produced simultaneously, then the time interval between successive maxima of the resulting wave is [Maxima refers to the maximum intensity]
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>Assignment Set-2>Q 51
A set of 10 tuning forks is arranged in series of increasing frequency. If each fork gives 3 beats with the preceding one and the last fork has twice the frequency of the first, then frequency of the first tuning fork is
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>Assignment Set-2>Q 52
The displacement at a point due to two waves are given by y1=2 sin (50πt) and y2=3 sin (58πt). Number of beats produced per second is
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>Assignment Set-2>Q 53
A tuning fork of unknown frequency produces 4 beats per second when sounded with another tuning fork of frequency 254 Hz. It gives the same number of beats per second when unknown tuning fork loaded with wax. The unknown frequency before loading with wax is
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>Assignment Set-2>Q 54
A listener and a source of sound are moving with the same speed in the same direction. The ratio of the frequency of the source and the frequency which is heard by the listener is
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>Assignment Set-2>Q 55
A man standing on a platform observes that the frequency of the sound of a whistle emitted by a train drops by 140 Hz. If the velocity of sound in air is 330 m s-1 and the speed of the train is 70 m s-1, the frequency of the whistle is