Question

When sunlight is concentrated on a piece of paper by a spherical mirror or lens, then a hole can be burnt in it. For doing this, the paper must be placed at the focus of:; A. Either a convex mirror or convex lens; B. either a concave mirror or concave lens; C. Either a concave mirror or convex lens; D. Either a convex mirror or concave lens

Answer 1

Answer:

it is a convex lens that produce hole on paper

Answer 2

Answer:

C) either a convex lens or a concave mirror

Explanation:

because they only form a real image which if reflects or refracts on the (f)