Question

Assertion : Two successive frequency of an organ pipe are `450 H_(Z)` and `750 H_(Z)` . Then, this pipe is a closed pipe.
Reason : Fundamental frequency of this pipe is `150 h_(Z)`.
A. If both Asseration and Reason are true an dthe Reason is correct explanation of the Asseration.
B. If both Asseration and Reason are true but Reason is not the correct explanation of Asseration.
C. If Asseration is true , but the Reason is false.
D. If Asseration is false but the Reason is true.

Answer 1

Correct Answer - B
`(450) / (750) = (3) /(5)`
Successiver harmonics are odd `3` and `5`. Hence, it is a closed pipe.