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Assertion : Sound produced by an open or...

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.

Text Solution

Verified by Experts

The correct Answer is:
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.
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The frequency of open organ pipe is

Organ pipes are musical instruments which are used for producing musical sound by blowing air into the pipe. Organ pipes are of two types: closed organ pipes are closed at one end and open at the other. Open organ pipes are open at both ends. The study shows that the overall musical sound produced by an open organ piipe is richer than the musical sound produced by a closed organ pipe. Read the above passage and answer the following questions: (i) Why the overall musical sound produced by an open organ pipe is richer than the musical sound produced by a closed organ pipe ? (ii) What does this study imply in day to day life ?

Vibrations in open organ pipe

Why is note produces by an open organ pipe sweeter that that produced by a closed organ pipe of same length?

Assertion: An open organ pipe of certain length has the same fundamental frequency as closed organ pipe of half the length. Reason : In case of an open organ organ pipe, at both the ends antinodes are formed while in case of closed organ pipe, at one end antinode and at the other end node is formed.

Why is the sound produced by an organ pipe open at both ends is better than that of an organ pipe closed at one end ?

Assertion: Quality of sound produced by an open pipe is better than a close pipe. Reason : Open pipe produces all harmonies but a closed pipe does not.

The fimdamental frequency of a closed organ pipe is equal to second of an open organ pipe is the length of closed organ pipe is 15 cm. The length of open organ pipe is

If the second overtone of an open organ pipe is in unison with third overtone of closed organ pipe, calculate the ratio of length of open organ pipe with closed pipe.

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