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A tuning fork vibrating with a frequency of 512 Hz is kept close to the open end of a tube filled with water , figure. The water level in the tube is gradually lowerd. When the water level is 17cm below the open end, maximum intensity of sound in heard. If the room temperature is `20^(@)C`, calculate
(a) speed of sound in air at room temperature.
(b) speed of sound in air at `0^(@)C`
(c) if the water in the tube is replaced with mercury, will there be any difference in your observations?

A

275 `m//s`

B

376 `m//s`

C

356 `m//s`

D

330 `m//s`

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