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Question: Answered & Verified by Expert
If two waves having amplitudes $2 A$ and $A$ and same frequency and velocity, propagate in the same direction in the same phase, the resulting amplitude will be
PhysicsWaves and SoundJEE Main
Options:
  • A $3 A$
  • B $\sqrt{5} A$
  • C $\sqrt{2} A$
  • D $A$
Solution:
1832 Upvotes Verified Answer
The correct answer is: $3 A$
In the same phase $\varphi=0$ so resultant amplitude $=a_1+a_2=2 A+A=3 A$

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