Question

(i) A convex lens forms a virtual image of an object placed (A) at infinity (B) at a distance 2F from the lens (C) at a distance F from the lens (D) between the principal focus and the optical centre of the lens ​

Answer 1

Answer:

virtual image of an object is formed by a convex lens only when the object is placed between the lens and the focus. Therefore the focal length of the lens should be greater than the distance of the object from the lens.

Answer 2

Answer:

a at infinity

Explanation:

it' is done when there's nothing in the place of the thing to the convex lens