When a spherical lens is held towards the Sun and a sharp image is formed on
piece of black pepes hole gets burnt in the black paper, after some time.
a) Name the used in the above activity.
What mean to the distance between the spherical lens and the black
paper
(c) What is the nee advantage of using a black paper rather than a white
paper
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Answer:
connvex lens is used here because it is converging lens
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