Assertion :A closed pipe and an open organ pipe are of same length. Then neither of their frequencies can be same. Reason: In the above case fundamental frequency of open pipe.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is C Assertion is correct but Reason is incorrect
in case of open pipes
$L = \frac{n λ}{2}$ anf frequency $f = \frac{v}{λ}$

closed pipe
$L = n \frac{λ}{4}$

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Assertion :A closed pipe and an open organ pipe are of same length. Then neither of their frequencies can be same. Reason: In the above case fundamental frequency of open pipe.

The correct option is C Assertion is correct but Reason is incorrectin case of open pipes L=nλ2 anf frequency f=vλclosed pipeL=nλ4

The correct option is C Assertion is correct but Reason is incorrect
in case of open pipes
$L = \frac{n λ}{2}$ anf frequency $f = \frac{v}{λ}$

closed pipe
$L = n \frac{λ}{4}$