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Three coherent waves having amplitudes 1...

Three coherent waves having amplitudes 12mm, 6mm and 4mm arrive at a given point with successive phase difference of `pi/2`. Then, the amplitude of the resultant wave is

A

7mm

B

10mm

C

5mm

D

4.8 mm

Text Solution

Verified by Experts

The correct Answer is:
B

`A = sqrt((8)^2 + (6)^2) = 10 mm .`
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