The intensity of a sound wave while passing t | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The intensity of the sound wave decreases by $10\%$ for every $1 \ m$ distance covered.This means that after $1 \ m$,the intensity becomes $90\%$

Vedclass · Accepted Answer

$72.9$

Vedclass · Answer

(B) The intensity of the sound wave decreases by $10\%$ for every $1 \ m$ distance covered.This means that after $1 \ m$,the intensity becomes $90\%$ of the initial intensity,i.e.,$0.9 \ I_0$.After passing through $3 \ m$,the intensity $I_3$ will be:$I_3 = I_0 	imes (0.9) 	imes (0.9) 	imes (0.9)$$I_3 = I_0 	imes (0.9)^3$$I_3 = I_0 	imes 0.729$Given the initial intensity $I_0 = 100 \ dB$,the final intensity is:$I_3 = 100 	imes 0.729 = 72.9 \ dB$.

The intensity of a sound wave while passing through an elastic medium falls by $10\%$ as it covers $1 \ m$ distance through the medium. If the initial intensity of the sound wave was $100 \ dB$,its value after it has passed through $3 \ m$ thickness of the medium will be .... $dB$.

Similar Questions

$A$ sound source emits sound waves in a uniform medium. If energy density is $E$ and maximum speed of the particles of the medium is ${v_{\max }}$,the plot between $E$ and ${v_{\max }}$ is best represented by

If the ratio of the amplitude of two waves is $4:3$,then the ratio of their maximum and minimum intensity is:

Waves of displacement amplitude $A$ and angular frequency $\omega$ travel in air with the same velocity. Which of the following waves has the highest intensity?

Do waves carry momentum also along with energy?

If the amplitude of sound is doubled and the frequency is reduced to one-fourth,the intensity of sound at the same point will be

Vedclass Test Series

Exam Paper Generator

Online Exam Module