NEET UG PHYSICS MCQ: WAVES

1 Medium

1 of 1

Application +4 | -1

A wave travelling along positive

x

-axis is given by

y = A\sin \left( {\omega t - kx} \right)

. If it is reflected from rigid boundary such that

80\%

amplitude is reflected, then equation of reflected wave is

View answer and explanation

Correct option: B

y = - 0.8A\sin \left( {\omega t + kx} \right)

Option B (

y = - 0.8A\sin \left( {\omega t + kx} \right)

) is correct because the wave is reflected with 80% amplitude and a phase change of

\pi

due to reflection from a rigid boundary.

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