Question

c
14) No matter how far you stand the
image formed is virtual and erect
The type of mirror / lens is
Concave mirror
Concave lens

And
Convex mirror
Convex lens​

Answer 1

Answer:

Concave lens And Convex mirror

The object must be placed between infinity and optical centre (or pole) in order to make virtual and erect image.

Both of the above answer is correct that is concave lens and convex mirror because they show similar nature in the formation of images.

Answer 2

(d) The mirrors are likely to be either plane or convex