e. Why does obtaining the image of the Sun on a paper with the help of a çoncave mirror burn the paper?
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The rays from the Sun are parallel. When these rays fall on the concave mirror, they are converged to a single point on the focal plane of the mirror. ... Now, if a paper is placed at that point to get the image of the Sun, the paper gets burnt because of huge amount of heat concentrated at that point.
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As we know concave mirror converges light rays to a focal point so when the sun rays are focused on 1 point it generates a lot of energy and it has the potential to burn any object.
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