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.
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Answer: B. Towards the screen
Explanation: As the object is still cast on a screen, we can imply that the object is real and doesn't lie in between the focus and the lens. Hence the lens should be moved towards the screen
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