Will a convex lens, the lower half of which is covered with a black paper, form a complete image of object placed at infinity?
draw a ray diagram and explain
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when one half of a convex lensis covered with a black paper this lens produces a complete image of the object .
to prove it we perform an experiment
take a convex lens and cover other halve of the lens using a black paper.place it vertically on a stand on one side of it place a burning candle. on opposite side of the lens place the screen. adjust the position of candle until a clear image is formed on the screen. we observe that a complete image is formed.
the image is formed as rays are passing through the side of lens which is not covered.
however the brightness of the image is reduced
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