A converging lens is used to form an image on a screen
PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
A converging lens is used to form an image on a screen. What happens to the image when the upper half of the lens is covered by an opaque screen?
(1) half the image will disappear.
(2) complete image will be formed.
(3) intensity of the image will increase.
(4) intensity of the image will decrease.