The imaginary line passing through the center of curvature and pole of a spherical mirror is called

What is called a spherical mirror?

The radius of curvature of a spherical mirror is 25 cm Find its focal length.

A particle goes in a circle of radius 2.0 cm. A concave mirror of focal length 20 cm is placed with its principal axis passing through the centre of the circle and perpendicular to its plane. The distance between the pole of the mirror and the centre of the circle is 30 cm. Calculate the radius of the circle formed by the image.

Moment of inertia of a thin uniform ring about an axis passing through the center of gravity and perpendicular to the plane is

The centre of a sphere of which the reflecting surface of a spherical mirror is a part is called

Assertion : Incident ray is directed towards the centre of curvature of spherical mirror. After reflection it retraces its path. Reason : Angle of incidence i = Angle of reflection r = 0°.

Geometric center of the spherical mirror is ______ .

Moment of inertia of a thin uniform rod about an axis passing through the center of mass and perpendicular to the length is