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Byju's Answer

Standard X

Physics

Image Formation by Spherical Lenses

A converging ...

Question

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

Half of the image will disappear

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Complete image will be formed of same intensity

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Half image will be formed of same intensity

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Complete image will be formed of decreased intensity

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Solution

The correct option is D Complete image will be formed of decreased intensity
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 the image is faint (intensity is decreased).

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