A student does not get a clear image witha convex lens. When the lens is moved a clear image is got on the screen. Justify your answer with a ray diagram when the
a) Lens is moved away from the screen.
b) Lens is moved near the screen
c) Lens moved far away from the screen
d) screen or object is removed
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Answer:
a. Lens is moved away from the screen.
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The characteristic property of a convex lens is that when it is moved far from the screen ,the image starts becoming much clearer as the mirror and screen become distant.
Convex mirror forms smaller images which are virtual and erect. It is the characteristic of convex mirrors. The clear image is not obtained in the start due to improper adjustment of the mirror and object.
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