Image Formation on Plane Mirror by Reflection

Draw a ray diagram for calculating the minimum size of the plane mirror to see the whole body of a person of height $H$ standing on the ground and arrive at the expression for the minimum size of the mirror to view a full image.

A person is $160 \mathrm{cm}$ tall. What would be the length of the mirror if he/she wants to see his/ her full image?

The angle of incidence of light rays on a plane mirror at an angle of $40°$. Then the mirror is rotated $25°$ anticlockwise. How much will the reflected ray rotate?

The light rays are falling on a plane mirror at an angle of $30°$. Then the mirror is rotated $15°$ anticlockwise. How much will the reflected ray rotate?

When a plane mirror is rotated by $\theta °$, the reflected ray will turn $2\theta °$.

Explain the change of size of shadows with respect to the position of the Sun.

When will the shadow of an object the shortest?

When will the size of the shadow of a material the largest?

The maximum length of a shadow would be at the noon.

Explain the chronological order of usage of sources of energy by humans.

Light undergoes refraction when it hits a plane mirror.

What happens when light hits a plane mirror?

The radius of curvature of a plane mirror is infinity.

The height of an object placed in front of a plane mirror is $15 \mathrm{cm}$. The height of the virtual image formed is _____ $\mathrm{cm}$.

An object is placed $15 \mathrm{cm}$in front of a plane mirror. The distance between the object and its virtual image is _____ $\mathrm{cm}$.

The image formed by a plane mirror is:

A man stands $10 \mathrm{m}$ in front of a large plane mirror. How far must he walk (in meters) before he is $5 \mathrm{m}$ away from his image?

Explain lateral inversion.

Light incident normally on a plane mirror attached to a galvanometer coil reflects backward as shown in figure. A current in the coil produces a deflection of $3.5°$ of the mirror. The displacement of the reflected spot of light on a screen placed $2.0 \mathrm{m}$ away is ($\tan 7°=0.1227$)

Four identical mirrors are mode to stand vertically to form a square arrangement as shown in a top view. A ray starts from the midpoint $\mathrm{M}$ of mirror $\mathrm{AD}$ and after two reflections reaches corner $\mathrm{D}$. Then, angle $\mathrm{\theta }$ must be

What is the focal length of a plane mirror?