Question

magnifying glass Magnify light coming from sun not the heat then why the paper which is kept under it starts burning​

Answer 1

Answer:

When a magnifying glass is held over a piece of paper at a distance equal to its focal length, the sun's rays falling on the lens converge at a point that lies somewhere on the paper. Thus, solar energy spread over the lens' surface area gets concentrated at one point. ... That's when the paper starts burning.

Answer 2

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Explanation:

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