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A student obtains a blurred image of a d...

A student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen he should move the lens

A

away from the screen

B

towards the screen

C

to a position very far away from the screen

D

either towards or away from the screen depending upon the position of the object.

Text Solution

Verified by Experts

The correct Answer is:
D
The incident was coming from the distant object will be parallel to the principal axes and as we know the reason parallel to the principal Axis after reflection by convex lens will pass through the principal focus.
Hence, a distinct image will be obtained immediately when distance between screen and lens is equal to the focal length So, option (D) is correct choice.
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