MHT CET 2017 Physics Solved Paper

(d) Fundamental frequency, for a closed pipe
v1=

V

4L

= 100 Hz
Fundamental frequency, for an open pipe
v1=

V

2L

= 200 Hz

In a pipe open at both the ends, all multiplesof the fundamental frequency are produced.
∴ 1 x 200, 2 x 200, 3 x 200...
i.e., 200, 400, 600...