NEETPhysics-Waves

NEET Physics Standing Waves MCQ Question

Type: MCQ-conceptual-Medium-Class 11

The displacement of a string is given by y(x, t) = 0.06sin(2πx3\frac{2\pi x}{3}cos(120πt)), where x and y are in metre and t in second. The length of the string is 1.5 m and its mass is 3.0 × 10⁻² kg.

A

It represents a progressive wave of frequency 60 Hz.

B

It is the result superposition of two waves of wavelength 3 m, frequency 60 Hz each travelling with a speed of 180 m/s in opposite direction.

C

Amplitude of this wave is constant

D

Both (2) and (3)

Correct Answer

Option D

Detailed Explanation

The given equation represents a standing wave formed by the superposition of two waves traveling in opposite directions. The frequency and wavelength match the given conditions.

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