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A converging lens is used to form an ima...

A converging lens is used to form an image on a screen. When the upper half of the lens is covered by opaque screen, then

A

half the image will disappear

B

complete image will be formed

C

intensity of the image will increase

D

intensity of the image will decrease

Text Solution

Verified by Experts

The correct Answer is:
b.,d.
The image formed will be complete because light ray s from alll parts of the object will strike on the lower half. But since the upper half light rays are cut off, the intensity will reduce.
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Knowledge Check

  • A converging lens is used to form an image on a screen. When the upper half of the lens is covered by an 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