Question

Assertion : Sound produced by an open organ pipe is richer than the sound produced by pipe from both ends, in case of oper organ pipe.
A. both, Assertion and Reason are true and Reason is the correct explanation of the Assertion.
B. both, Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. Assertion is true but the Reason is false.
D. both,Assertion and Reason are false.

Answer 1

Correct Answer - B
Sound produced by an open organ pipe is richer because
(i) it contains all harmonics. No harmonic is missing.
(ii) frequency of fundamental note in an open organ pipe is twice the fundamental frequency in a closed organ pipe of same length.
The assertion is true. The statement of reason is not wrong.But it does not explain the assertion.