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JEE Mains Model Paper 21 with solutions for free online practice
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© examsnet.com
Question : 2
Total: 90
Assertion (A): The fundamental frequency of an open organ pipe increases as the temperature
Reason (R): As the temperature increases, the velocity of sound increases more rapidly than length of the pipe.
Both A and R arc true and R is the correct explanation of A
Both A and R arc true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
Validate
Solution:
V =
√
V
P
M
=
√
V
R
T
M
n =
V
4
n = V
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