Question

A plane mirror reflects a beam of light to form a real image.
The incident beam is
(a) parallel (b) convergent
(c) divergent (d) any one of the above

Answer 1

Answer:

A convergent light beam can do this.

So the answer is "convergent".

You should be able to show this by drawing a "ray diagram" for the light beam. The reflected rays converge and that's what's needed to produce a real image.

A "real object" always produces a "virtual image" in a plane mirror. That's because the reflected rays diverge.

Interestingly, a plane mirror can form a real image if the object itself is virtual.

i.e. rays are convergent.

Answer 2

Answer:

the answer is parallel