Question Detail

PHY 104 PHY 104 Past Questions Objective Question
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Question

Two out-of-phase sound waves with the same amplitude and frequency arrive at the same place at the same time, resulting in
Options
A beat
B Cancellation of the two sounds
Correct Answer
C A lower frequency
D A bouncing of one wave
Correct Answer

Option B is the correct answer.

Detailed Explanation

If two waves of the same amplitude and frequency are exactly out of phase (phase difference of 180°), they interfere destructively, and the resultant amplitude is zero, leading to cancellation of the two sounds.

Hint

Consider the principle of superposition. What happens when a crest meets a trough?

Question Info

Course: PHY 104
Topic: PHY 104 Past Questions
Type: Objective
Difficulty: Not specified
Question 757 of 947
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