Prove that for spherical mirrors ,the product of the distances of the object and the image from the principal focus is always equal to the square of the principal focal length.

Define the principal focus of concave mirror.

Define principal focus of a mirror.

An object is held at the principal focus of a concave lens of focal length F. where is the image formed?

An object is at a distance of 10 cm from a spherical mirror and the image of the object is at a distance of 30 cm from the mirror on the same side as the object.Is the mirror concave or convex?What is its focal length?

Define spherical mirror, centre of curvature, radius of curvature, pole, principal axis and focal length of spherical mirror.

A convex mirror of focal elongth f produces an image magnified m times.The distance of the object from mirror is

In an experiment to determine the focal length (f) of a concave mirror by the u-v method, a student places the object pin A on the principal axis at a distance x from the pole P. The student looks at the pin and its inverted image from a distance keeping his/her eye in line with PA. When the student shifts his/her eye towards left, the image appears to the right of the object pin. Then,