A converging lens is used to form an image on a screen. When the upper half of the lens is covered by a opaque screen:
A. half the image will disappear
B. complete image will disappear
C. intensity of image will decrease
D. intensity of image will increase
Answer:C
A converging lens is used to form an image on a screen. When the upper half of the lens is covered by a opaque screen:
A. half the image will disappear B. complete image will disappear C. intensity of image will decrease D. intensity of image will increase