SAT Subject Physics Practice Question 424: Answer and Explanation

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Question: 424

15.

Which set of pulses will soon show constructive interference?

A. A
B. B
C. C
D. D
E. E

Correct Answer: D

Explanation:

The correct answer is (D). When the two impulses are located at the same point they will algebraically add the two positive peaks, yielding a larger wave, which is equal to both of their magnitudes.

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