NEET UG PHYSICS MCQ: WAVES

1 Easy

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Application +4 | -1

Two identical sinusoidal waves each of amplitudes 5 mm with a phase difference of

\frac{\pi }{2}

are travelling in the same direction in a string. The amplitude of the resultant wave (in mm) is

View answer and explanation

Correct option: B

5\sqrt 2

Option B (

5\sqrt 2

) is correct because when two waves of equal amplitude interfere with a phase difference of

\pi/2

, the resultant amplitude is

\sqrt{2}

times the individual amplitude.

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