NEET Physics Wave Motion Assertion Reason Question
Assertion (A): A sinusoidal wave represented by the equation y(x, t) = a sin(kx - ωt) travels in the positive direction of the x-axis.
Reason (R): For a wave travelling in the positive x-direction, the phase kx - ωt must remain constant as t increases.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
According to the NCERT context, a wave described by y(x, t) = a sin(kx - ωt) travels in the positive x-direction, and as time increases, x must increase to keep the phase constant.
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