. The equation of a vibrating string, fixed at both ends, is given by


where x is the distance (in cm) measured from one end of the string, t is the time (in seconds), and y gives the displacement. The string vibrates in 4 loops.

The speed of transverse waves along the string equals, for the fundamental mode

A. 60 m/s

B. 120 m/s

C. 30 m/s

D. 15 m/s.

Best Answer

Ans: A

 Sol: The speed of the transverse waves equals the frequency × wavelength

V = 200 × 0.3 m/s = 60 m/s

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