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  • If sound travels in air with the speed of  340m/s, then the number of tones present in an organ pipe of length 2m and its maximum frequency 12  Hz are -<strong

If sound travels in air with the speed of  340m/s, then the number of tones present in an organ pipe of length 2m and its maximum frequency 12  Hz are -

Option: 1

17


Option: 2

11


Option: 3

9


Option: 4

14


Answers (1)

best_answer

Speed of sound,  v= 340 m/s

Length of open organ pipe , l= 2 m

Frequency, f = 1200 Hz

For open organ pipe, Fundamental frequency,

f_{o}=\frac{v}{2l} = \frac{340}{2\times 2} = 85

Therefore, number of tones present in the open organ pipe ,

=\frac{f}{f_{o}} = \frac{1200}{85} =14.11 or 14

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