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Question

The process of getting a sharp and clear image of an object is called :

A
screening
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B
parallax
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C
focussing
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D
none of these
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Solution

The correct option is D focussing
The process of getting a sharp and clear image of an object from an optical device is called focussing. In a simple microscope, focussing is done by adjusting the position of both objective and eyepiece. Objective lens is used for coarse focussing and eyepiece is used for soft focussing.

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