A light ray is an incident on a plane mirror at an angle of 30⁰ with the horizontal. At what angle with horizontal must the plane mirror be placed in its path, so that it becomes vertical upward after reflection?

A plane mirror reflecting a ray of incident light is rotated through an angle θ about an axis through the point of incidence in the plane of the mirror perpendicular to the plane of incidence, then   

A glass prism of refractive index 1.5 is immersed in water $(\mu =\frac{4}{3})$. A light beam incident normally on the face AB is totally reflected to reach the face BC if:

Two plane mirrors are arranged at right angles to each other as shown in the figure. A ray of light is incident on the horizontal mirror at an angle $\theta$. For what value of $\theta$ the ray emerge parallel to the incoming ray after reflection from the vertical mirror?

Two plane mirrors $A$ and $B$ 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 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

A ray of light is incident on a plane reflecting surface at an angle of ${30}^{\circ }$. What will be the deviation if the ray suffers a reflection again at a surface inclined at ${60}^{\circ }$ to the first surface?

A point source of light B is placed at a distance L in front of the center of a mirror of width d hung vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror at a distance of 2 L from it. The distance over which he can see the image of the light source in the mirror is

Consider the metal coin in figure. The right half is polished, while left half is unpolished.

In a dark room, this coin is placed face up on the floor and illuminated with a thin-beamed flashlight, as shown in figure. A and B look at the coin from the position as indicated in figure

According to A, which half of the coin (if either) is brighter?

If incident ray MP and reflected ray QN are parallel to each other, find the angle $\theta$ between the mirrors.

Two plane mirrors are inclined to each other at angle $\theta$. A ray of light is reflected first at one mirror and then at the other. Find the total deviation of the ray