Question

Two organ ( open) pipes of length 50 cm and 51 cm produces 6 beats . Then the speed of sound is nearly

Answer 1

Answer:

Correct option is B)

δ=

2l

v

Beat=δ

1

−δ

2

6=

2(50)

v

−

2(51)

v

6=v(

2×50

1

−

2×51

1

)

v=

2×51−2×50

6×2×50×2×51

=30600 cm/s =306 m/s

Explanation:

v=2×51−2×506×2×50×2×51 =30600 cm/s =306 m/s.