The laws of reflection of light are applicable to- 

What is the nature of incident rays when the object is at infinity?

What is the minimum number of rays required for locating the image formed by a spherical mirror?

Which statement is true for the reflection of light? 

 If angle of incidence when a ray strikes a mirror is 30°, then find the angle that the reflected ray will makes with the mirror.

A student conducts an activity using a concave mirror with focal length of 20 cm. He placed the object at 30 cm from the mirror.  Where is the image likely to form?

It is desired to obtain an erect image of an object, using a concave mirror of focal length 20 cm.

What should be the range of distance of the object from the mirror?

If the reflected ray and normal at the point of incidence of a mirror lie in the plane of a table, then in which plane will the incident ray lie? 

Examine the above figure :

What is the focal length and radius of curvature of the concave mirror?

 Identify the optical device if an object is placed between the device and its focus and image formed is virtual, erect and enlarged and formed behind the device.