Physics Practice Test – Reflection of Light Waves

A ray of light is incident on a plane mirror at an angle of 20°. This mirror is rotated through, twice this angle. In this new position, the angle between the incident ray and the reflected ray is _______ 

A. 20°.       B. 40°     C. 50°.     D. 120°

A concave mirror forms a magnified and erect image only when the object is placed _______

A. at the center of curvature.
B. at the focus.
C. between the focus and the pole of the mirror
D. beyond the radius of curvature.

The angle of incidence of a ray on a plane mirror is 55^o. Determine the angle between the reflected ray and the mirror.

A. 35 ^o B. 45 ^o C. 55 ^o D. 110 ^o

An object is placed in front of two plane mirror inclined at 60° to each other. Determine the number of images formed.

A. 2      B. 3      C. 5      D. 7

When an object is placed at the principal focus of a concave mirror, the location of the image formed is ____

A. between principal focus and pole.
B. between principal focus and centre of curvature.
C. at infinity.
D. at centre of curvature.