Question

In 0.8m there are 40 waves and observer’s ear perceives 180 waves in a minute.
Calculate wave length, frequency and speed of sound wave.

Answer 1

Explanation:

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Answer 2

Given:

40 waves in 0.8 m

Observer’s ear perceives 180 waves in a minute

To find:

Calculate wave length, frequency and speed of sound wave.

Solution:

Wavelength (λ) = 0.8 m/40 = 0.02 m = 2 cm

Frequency of the wave (f) = 180 / 60 = 3 Hz

Speed of the wave (ν) = f × λ = 2 × 3 = 6 cm s⁻¹

Therefore, wavelength = 2 cm, Frequency = 3 Hz, and Speed = 6 cm s⁻¹