Question

Which of the following statements is/are correct about a concave lens when an object moves from a large distance towards the lens?

• A. The image moves away from the focus towards the optical centre of the lens.
• B. The size of the image gradually increases, but it always remains smaller than the object.
• C. The image formed is always inverted.
• D. The image formed can be obtained on the screen.

Answer 1

Answer: (A), (B)

The size of the image gradually increases, but it always remains smaller than the object.

When an object moves towards a concave lens from a large distance, the image moves from focus towards the optical centre while size of image increases but still it stays smaller than the object.