Question

A sound of wavelength was found to be 151 m. If its speed in a medium is 113,250 m/s, what could be the frequency of the sound wave?

• A. It increase little
• B. It increases to a large extent
• C. It doesn't change
• D. It decreases

Answer 1

The correct option is B

It increases to a large extent

Speed of sound = 113250 m/s

Wavelength = 151 m

Speed = wavelength x frequency

frequency $=\frac{speed}{wavelength}=\frac{113250}{151}=750Hz$