Question
A converging lens is used to form an image on a screen. When upper half of the lens is covered by an opaque screen
Answer: Option D
:
D
To form the complete image only two rays are to be passed through the lens. Moreoverthe total amount of light released by the object is not passing through the lens because of the covering. Therefore the intensity of the image will be reduced and theimage formed will befaint, not sharp.
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:
D
To form the complete image only two rays are to be passed through the lens. Moreoverthe total amount of light released by the object is not passing through the lens because of the covering. Therefore the intensity of the image will be reduced and theimage formed will befaint, not sharp.
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