At a crest on a stretched string is located at

PHYSICS · Single correct · CBSE · Physics · Waves · Waves

Problem

t = 0\,\text{s}

a crest on a stretched string is located at

x = 0.25\,\text{m}

. At

t = 0.05\,\text{s}

the same crest is observed at

x = 0.45\,\text{m}

. Which statement about the wave’s propagation is correct? (a) It travels toward the

-x

direction (b) It travels toward the

+x

direction (c) The string sustains a standing wave, so no net propagation occurs (d) Its speed is

4\,\text{m s}^{-1}

, but the direction cannot be decided from the data