Two mirrors, labelled $L_1$ for left mirror and $L_2$ for right mirror, as shown in the figure, are parallel to each other and $3.0$ $\mathrm{m}$ apart. A person, standing $1.0$ $\mathrm{m}$ from the right mirror $\left(L_2\right)$ looks into this mirror and sees a series of images. The second nearest image seen in the right mirror is situated at a distance

Two mirrors are inclined at an angle $\theta$, as shown in the figure. Light ray is incident parallel to one of the mirrors. The ray will start retracting its path after the third reflection, if

In the given figure, velocity of image with respect to mirror is

Two plane mirrors are inclined to one another at an angle of $60°$. A ray is incident on mirror $M_1$ at an angle $i$, parallel to $M_2$. The reflected ray from mirror $M_2$ is parallel to mirror $M_1$, as shown in the figure. The angle of incidence $i$ is

Two plane mirrors, $\mathrm{A}$ and $\mathrm{B}$, are aligned parallel to each other, as shown in the figure. A light ray is incident at an angle of ${30}^{\circ }$, at a point just inside one end of $\mathrm{A}$. The plane of incidence coincides with the plane of the figure. The maximum number of times the ray undergoes reflections (including the first one) before it emerges out is