Q15.12Multiple correct
The displacement of a string is given by y (x,t) = 0.06 sin (2πx/3) cos (120πt) where x and y are in m and t in s. The length of the string is 1.5m and its mass is 3.0 × 10−2 kg .
- (a)It represents a progressive wave of frequency 60Hz.
- (b)It represents a stationary wave of frequency 60Hz.
- (c)It is the result of superposition of two waves of wavelength 3 m, frequency 60Hz each travelling with a speed of 180 m/s in opposite direction.
- (d)Amplitude of this wave is constant.