Spherical Mirrors and Image Formation

Front

What are spherical mirrors?

Back

Mirrors in which the reflecting surface is a part of a sphere.

Front

What is the centre of curvature of a mirror?

Back

The centre of a sphere of which the mirror is a part.

Front

What is the radius of curvature (R) of a mirror?

Back

The radius of the sphere of which the mirror is a part.

Front

What is the aperture of a mirror?

Back

The reflecting surface of the mirror.

Front

What is the pole of a mirror?

Back

The midpoint of the reflecting surface of the mirror.

Front

What is the principal axis of a mirror?

Back

The straight line connecting the pole of the mirror and the centre of curvature.

Front

What is the relationship between the angle of incidence and angle of reflection in spherical mirrors?

Back

They are equal.

Front

What happens to rays of light incident on a concave mirror parallel to the principal axis?

Back

They pass through a fixed point on the principal axis after reflection, known as the principal focus (F).

Front

Is the principal focus of a convex mirror real or virtual?

Back

Virtual.

Front

Is the principal focus of a concave mirror real or virtual?

Back

Real.