Assertion :The fundamental frequency of an open organ pipe increases as the temperature is increased. Reason: As the temperature increases, the velocity of sound increases more rapidly than length of the pipe.

A
Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
B
Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
C
Assertion is correct but Reason is incorrect.
D
Both Assertion and Reason are incorrect.

Solution:

The fundamental frequency of an open organ pipe is $n = \frac{v}{2 l}$ . As temperature increases, both v and I increase but v increases more rapidly than I. Hence, the fundamental frequency increases as the temperature increases.

Assertion :The fundamental frequency of an open organ pipe increases as the temperature is increased.
Reason: As the temperature increases, the velocity of sound increases more rapidly than length of the pipe.

Solution:

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