Spherical Mirror

When a spherical mirror is held up almost facing the sun, a sharp image of the sun is formed on a small piece of paper, which causes it to catch fire. The spherical mirror is _____ in nature and the sheet of paper is placed at the _____ of the mirror. Fill in the blanks by choosing an appropriate option from the ones given below.

What happens if aperture is increased in spherical mirror?

What is the aperture of a spherical mirror?

Type of spherical mirror are:

In a mirror, the place that is the centre of the reflecting surface is called a _____.

Principal axis is the line joining of the pole and the _____

Define principal axis of a spherical mirror.

The relation between radius of curvature and focal length of spherical mirror is_____.

What is the radius of curvature of a spherical mirror?

What is the pole of a spherical mirror?

Which type of mirror has a virtual focus?

Explain the meaning of the term focus of a convex mirror, with the help of a suitable ray diagram. 

Correct relation between radius of curvature($R$) and Focal length ($F$) of a spherical mirror is:

An object is placed at a distance of $10 \mathrm{cm}$. From a convex mirror of focal length $15 \mathrm{cm}$. The position and nature of the image are :

_____ is located behind a convex mirror :

A spherical mirror and a thin spherical lens each of focal length $-10 \mathrm{cm}$ are given. The mirror and lens are likely to be:

What is a concave mirror? Discuss the Image formation by a concave mirror at different positions of an object.

Assertion(A): The centre of curvature is not a part of the mirror. It lies outside its reflecting surface.

Reason (R): The reflecting surface of a spherical mirror forms a part of a sphere. This sphere has a centre.

A convex mirror always

Rajeev obtained the image of a distant object on a screen by using a concave mirror. Then, the distance between mirror and screen gives