Question

One half of a convex lens of focal length 10cm is covered with black paper. Can such a lens produce an image of a complete object placed at a distance of 30cm from the lens ? Draw a ray diagram to justify your answer. A 4cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 20cm. The distance of the distance of the object from the lens is 15cm. Find the nature, position and size of the image.

Answer 1

such a convex lens which is half covered cannot produce a clear image .
it produces a blurred image .

Answer 2

It produces a complete image of the object however the intensity of the object is reduced.
hope it helps

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