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  • A pipe of length 85 cm is closed from one end. Find the number of possible natural oscillations of the air column in the pipe whose frequencies lie below 1250 Hz. The velocity of sound in air is 34

A pipe of length 85 cm is closed from one end. Find the number of possible natural oscillations of the air column in the pipe whose frequencies lie below 1250 Hz. The velocity of sound in air is 340 m/s.

Option: 1

12


Option: 2

8


Option: 3

6


Option: 4

4


Answers (1)

best_answer

Fundamental frequency

        = \frac{v}{4L} = \frac{34000}{4 * 85} = 100 Hz

So, the possible frequencies below 1250 Hz are 100 Hz, 300 Hz, 500 Hz, 700 Hz, 900 Hz, and 1100 Hz.

Posted by

himanshu.meshram

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