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A pipe of length 85 cm is closed from o...

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

A

12

B

8

C

6

D

4

Text Solution

Verified by Experts

The correct Answer is:
C
Fundamental frequency ` = (V)/(4l) = (34000)/(4 xx 85) = 100 ` Hz
So, possible frequencies below 1250 Hz are 100 , 300, 500, 700, 900 and 1100 Hz
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Knowledge Check

  • The number of possible natural oscillations of air column in a pipe closed at one end of length 85 cm whose frequencies lie below 1250 Hz are :(velocity of sound = 340 ms^(-1) )

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