A cylindrical tube containing air is ope...

A cylindrical tube containing air is open at both ends. If the shortest length of the tube for a resonance with a fork is 20cm, the next shortest length for resonance with the same fork will be

60cm

40cm

90cm

80cm

Text Solution

Verified by Experts

The correct Answer is:

`lamda/2 = 20 therefore lamda = 40cm`
`lamda = l=40cm`

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