Q. 11

# A transverse harmonic wave on a string is described by Where x and y are in cm and t is in s. The positive direction of x is from left to right.

A. The wave is travelling from right to left.

B. The speed of the wave is 20m/s.

C. Frequency of the wave is 5.7 Hz.

D. The least distance between two successive crests in the wave is 2.5 cm.

Answer :

D. **The least distance between two successive crests in the wave is 2.5 cm**. This statement is incorrect

Explanation: The least distance between two successive crests in wavelength

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PREVIOUSA train whistling at constant frequency is moving towards a station at a constant speed V. The train goes past a stationary observer on the station. The frequency n′ of the sound as heard by the observer is plotted as a function of time t (Fig 15.1). Identify the expected curve.NEXTThe displacement of a string is given by Where and are in m and t in s. The length of the string is 1.5m and its mass is.

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