Question

Taking the speed of sound in air to be 330 m/s, select the correct frequency of a sound wave with a wavelength of 25 cm:

990 Hz
355 Hz
8250 Hz
1320 Hz

Answer 1

I hope it helps

please solve once

Answer 2

we know that
speed = frequency× lembda
v=f ×l
wavelength =l
speed =v
1m=100cm
25cm÷100 = m
so
330=f× 25÷100
330×100÷25 =1320
1320Hz

I hope it is very helpful to you