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Arkita Rani
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Asked: 2021-12-07T09:33:41+00:00 In:

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

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11.11%(A) away from the screen ( 1 voter )
33.33%(B) towards the screen ( 3 voters )
11.11%(C) to a position very far away from the screen ( 1 voter )
44.44%(D) either towards or away from the screen depending upon the position of the object ( 4 voters )
Based On 9 Votes

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We must know that – the rays parallel to the principal axis, after refraction by convex lens, will pass through the principal focus. And the incident rays coming from the distant object will be parallel to the principal axis.
Hence, a distinct image will be obtained immediately when distance between screen and lens is equal to focal length.

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    1. (D) either towards or away from the screen depending upon the position of the object

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