Post Utme Unilorin 2022 Physics Question 8

Practice objective / multiple choice question 8 from the 2022 Post Utme Unilorin Physics examination.

Post Utme Unilorin 2022 Physics Objective / Multiple Choice
Question 8 POST_UTME_UNILORIN • 2022 • PHYSICS • objective

A sound wave of frequency $f$ and amplitude $A$ is traveling through a medium of density $\rho$ and speed of sound $v_s$. If the wave is reflected from a rigid surface, what is the amplitude of the reflected wave?

Answer Options

Correct Answer A. A_r = A \left\( \frac{v_s - v_i}{v_s + v_i} \right \)^2
B. A_r = A \left\( \frac{v_s + v_i}{v_s - v_i} \right \)^2
C. A_r = A \left\( \frac{v_s - v_i}{v_s + v_i} \right \)
D. A_r = A \left\( \frac{v_s + v_i}{v_s - v_i} \right \)
Correct Answer
A
Correct Option:
A_r = A \left\( \frac{v_s - v_i}{v_s + v_i} \right \)^2

About This Question

This is Post Utme Unilorin 2022 Physics Question 8. It is one of the objective questions from the 2022 Post Utme Unilorin Physics examination.

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