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Using the same tuning fork first resonac...

Using the same tuning fork first resonace lengths wre observed with an organ pipe open at both ends and also with an organ pipe closed at one end, as `l_1` and `l_2` respectively. The ratio `l_1:l_2` will be

A

`1:1`

B

`2:1`

C

`1:2`

D

`3:1`

Text Solution

Verified by Experts

The correct Answer is:
B
The first resonance length for a open pipe =`V/(2l_1)`
The first resonance length for an closed pipe= `V/(4l_2)`
`:'V/(2l_1)=V/(4l_2)`
`l_1/l_2=4/2`
`:'l_1:l_2=2:1`
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