ICSE Class 10 Physics 2020 Solved Paper

Question : 18 of 67

Marks: +1, -0

A sound wave travelling in water has wavelength

0.4 {\m}

.
Is this wave audible in air? (The speed of sound in water

=1400 {\ms}^{-1}

)

Solution:

Given :

λ=0.4 {\m}, v=1400 {\ms}^{-1}

We know,

v=f λ

f=\;{v}/{λ}=\;{1400}/{0 ⋅ 4}=3500 {\Hz}

Yes. Since the value of

f

lies in the audibility range

(20 {\Hz}

20,000 {\Hz})

, so the sound wave is audible in air.

Go to Question:

Prev Question

Next Question