The speed of propagation of a wave in a medium is 300 m/s

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

The speed of propagation of a wave in a medium is 300 m/s. The equation of motion of point at

x = 0

is given by

y = 0.04 \sin 600 \pi t

(metre). The displacement of a point

x = 75

cm at

t = 0.01

s is (1) 0.02 m (2) 0.04 m (3) zero (4) 0.028 m