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Question

A student obtained clear image of window grills on the screen. but the teacher told him to get the image of a tree far away, instead of window. To get clear image, the lens must be..........

A
moved towards the screen
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B
moved away from the screen
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C
moved very close to scrren
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D
none of these
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Solution

The correct option is A moved towards the screen
In order to get a clear image of the tree the student, a concave mirror produces image larger than the actual object size hence only a concave mirror can be used to take the image of a faraway object. concave lens should be moved slightly towards the screen.
So the correct option is 'moved towards the screen.'

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