Physics - Geometrical Optics Question with Solution | TestHub

A light ray $I$ is incident on a plane mirror $M$. The mirror is rotated in the direction shown in the figure by an arrow at a frequency of $9/\pi$ rps. The light reflected by the mirror is received on the wall $W$ at a distance of $10m$ from the axis of rotation. When the angle of incidence becomes $37^{\circ }$, the speed of the spot (a point) on the wall is $Vm/s$. Find the value of $V$.