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.