Q. A converging lens is used to form an image on a screen. When upper half of the lens is covered by an opaque screen
A) Half the image will disappear
B) Complete image will be formed of same intensity
C) Half image will be formed of same intensity
D) Complete image will be formed of decreased intensity
Explanation
(d) Because to form the complete image only two rays are to be passed through the lens and moreover, since the total amount of light released by the object is not passing through the lens, therefore image is faint (intensity in decreased)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.