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JEE Main Physics Class 11 Waves Part 2 Questions
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© examsnet.com
Question : 48
Total: 48
A tunning fork of frequency
340
Hz
resonates in the fundamental mode with an air column of length
125
cm
in a cylindrical tube closed at one end. When water is slowly poured in it, the minimum height of water required for observing resonance once again is _____cm.
(Velocity of sound in air is
340
ms
−
1
)
[28-Jun-2022-Shift-2]
Your Answer:
Validate
Solution:
Given
340
=
n
4
×
125
v
⇒
n
=
5
So
λ
=
100
cm
So minimum height is
λ
2
=
50
cm
© examsnet.com
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