waves

Related Questions

• Beats are produced by two waves ${{y}_{1}}=a\sin 1000\,\pi t,$ ${{y}_{2}}=a\sin 998\pi t$. The number of beats heard/sec is

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• Tuning fork ${{F}_{1}}$ has a frequency of 256 Hz and it is observed to produce 6 beats/second with another tuning fork ${{F}_{2}}$. When ${{F}_{2}}$ is loaded with wax, it still produces 6 beats/second with ${{F}_{1}}$. The frequency of ${{F}_{2}}$ before loading was

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• When a tuning fork A of unknown frequency is sounded with another tuning fork B of frequency 256 Hz, then 3 beats per second are observed. After that A is loaded with wax and sounded, the again 3 beats per second are observed. The frequency of the tuning fork A is

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• A source of sound is travelling towards a stationary observer. The frequency of sound heard by the observer is of three times the original frequency. The velocity of sound is v m/sec. The speed of source will be

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• A stretched string of 1m length and mass $5\times {{10}^{-4}}kg$ is having tension of 20N. If it is plucked at 25cm from one end then it will vibrate with frequency

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