Wave pulse on a string shown in figure is moving to the right without changing shape. Consider two particles at position `x_(1)=1.5m and x_(2)=2.5`m. Their transverse velocities at the moment shown in figure are along directions :

Options

A. positive `y-`axis and positive `y-`axis respectively
B. negative `y-`axis and positive `y-`axis respectively
C. positive `y-`axis and negative `y-`axis respectively
D. negative `y-`axis and negative `y-`axis respectively

Answer

B

Explanation

Dotted shaps shows pulse position after a short time interval. Direction of the velocities are decided according to according to direction of displacment of the particles.
at `x = 1.5` stope is `+ve`
at `x = 2.5` slope is `-ve`