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 m s)

Question

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 m $s^{- 1}$ )

Smart Achievers · Accepted Answer

(4)

$f = n . \frac{V}{4 l},$ $n = 1, 3, 5, \dots$

$Possible frequencies are 100, 300, 500, 700, 900, 1100$

Solution

Q.
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 m $s^{- 1}$ )

1 4

2 5

3 7

4 6

Ans.
(4)

$f = n . \frac{V}{4 l},$ $n = 1, 3, 5, \dots$

$Possible frequencies are 100, 300, 500, 700, 900, 1100$

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Solution

Q. 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 m s-1)

1 4

2 5

3 7

4 6

Ans. (4) f=n.V4l, n=1,3,5,… Possible frequencies are 100, 300, 500, 700, 900, 1100

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Q.
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 m $s^{- 1}$ )

Ans.
(4)

$f = n . \frac{V}{4 l},$ $n = 1, 3, 5, \dots$

$Possible frequencies are 100, 300, 500, 700, 900, 1100$