Q19 of 97 Page 322

A tuning fork for a frequency 480 Hz is used to vibrate a sonometer wire having natural frequency 240 Hz. The wire will vibrate with a frequency of

The frequency of vibration of the sonometer wire is same as that of the fork at that


point. Having that said, the standing waves hence will be of larger amplitude because the


frequency of vibration is greater than if it were to vibrate at its natural frequency.

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Two sine waves travel in the same direction in a medium. The amplitude of each wave is A and the phase difference between the two waves is 120°. The resultant amplitude will be

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A tuning fork of frequency 480 Hz is used to vibrate a sonometer wire having frequency 410 Hz. The wire will vibrate with a frequency

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A sonometer wire of length l vibrates in fundamental mode when excited by a tuning fork of frequency 416 Hz. If the length is doubled keeping other things same the string will