May 2022

In order to obtain a magnification of, -0.6 (minus 0.6) with a concave mirror, the object must be placed

An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the original and final images seen in the mirror is

If an object is placed 21 cm from a converging lens, the image formed is slightly smaller than the object. If the object is placed at a distance of 19 cm from the lens, the image formed is slightly larger than the object. The approximate focal length of the lens is:

Which position of the object will produce a magnified virtual image, if a concave mirror of focal length 15 cm is being used?

A lens of focal length 12 cm forms an erect image, three times the size of the object. The distance between the object and image is

An object is placed at 100 mm in front of a concave mirror which produces an upright image (erect image). The radius of curvature of the mirror is

A ray of light passes from a medium X to another medium Y. No refraction of light occurs if the ray of light hits the boundary of medium Y at an angle of:

A ray of light is travelling in a direction perpendicular to the boundary of a parallel glass slab. The ray of light

A concave mirror produces a magnification of +4. The object is placed