1.

An air column in a pipe which is closed at one end, will be in response with the vibrating body of frequency 83 Hz. Then the length of the air column is

Answer»

1.5 m
`0.5` m
`1.0` m
`2.0` m

Solution :`1.0` m
Frequency , f `= (v)/(LAMBDA)`
`83 = (v)/(lambda)`
For air column in a pipe CLOSED at one end ,
`l_(1) = (lambda)/(4) implies = 4 l_(1)`
`therefore 83 = (v)/(4l_(1))`
VELOCITY of sound in air = `v = 343 ms^(-1)`
`83 = (343)/(4l_(1))`
`therefore = (343)/(332) = 1.033` m


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