MHTCET 2016 Physics Solved Paper

(d) Fundamental frequency of organ pipe (f0) is given by
f0=

V0

2l

For 2nd overtone,

3

2

f0=

3V0

2l

For a closed organ pipe, fundamental y frequency is f0=

V0

4l

.Third overtone of closed organ pipe at one end is
f3=

7

4

V0

l

We have given,

7V0

4l

−

3V0

2l

=150
⇒ (

7

4

−

6

4

)

V0

l

= 150
⇒

V0

4l

=150 ⇒

V0

2l

=300Hz