Question

In a medium, sound
travels 2 km in 38
and in air, it travels
3 km in 10 s. The
ratio of the
wavelengths of
sound in the two
media respectively
is:
1:8
9:20
8:1
20 : 9​

Answer 1

Answer:

20 : 9

Explanation:

bcz the sound travel slow in a air fastly bcz it had a refractive index 1.0003