SATHEE: wave_mechanics progressive

wave_mechanics progressive_waves Question 9

Question: If amplitude of waves at distance r from a point source is A, the amplitude at a distance 2r will be

[MP PMT 1985]

Options:

A) 2A

B) A

C) A/2

D) A/4

Show Answer

Answer:

Correct Answer: C

Solution:

$ I\propto A^{2}\propto \frac{1}{d^{2}} $

Therefore $ A\propto \frac{1}{d} $

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wave_mechanics progressive_waves Question 9

Question: If amplitude of waves at distance r from a point source is A, the amplitude at a distance 2r will be

Options:

Answer:

Solution:

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