NCERT Solutions for Class 9 Science Chapter 12

Important NCERT Questions

Sound

NCERT Books for Session 2022-2023

CBSE Board and UP Board

Intext Questions

Page No-166

Questions No-3

# Calculate the wavelength of a sound wave whose frequency is 220 Hz and speed is 440 m/s in a given medium.

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Given values:

– Frequency (f) = 220 Hz

– Speed (v) = 440 m/s

Formula relating speed, frequency, and wavelength:

v = λ x f

1. Rearrange the formula to solve for wavelength (λ):

λ = v/f

2. Substitute the given values into the formula:

λ = 440 m/s 220 Hz

3. Calculate the wavelength:

λ = 2 meters

Therefore, the wavelength of the sound wave with a frequency of 220 Hz and a speed of 440 m/s in the given medium is 2 meters.