NEET Physics Wave Motion MCQ Question
Which of the following statements about wave motion is correct?
A wave traveling in the negative direction can be expressed as y(x, t) = a sin(kx + wt).
The amplitude of a wave described by y(x, t) = 2a sin(kx) cos(wt) remains constant across all points.
The wavelength of a wave can be defined as the distance between two consecutive troughs.
The principle of superposition applies only to waves of different frequencies.
Correct Answer
Detailed Explanation
A wave traveling in the negative direction is represented as y(x, t) = a sin(kx + wt), as mentioned in the context. The amplitude in the equation y(x, t) = 2a sin(kx) cos(wt) varies with position, and the principle of superposition applies to waves with the same frequency.
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