how to burn a piece of paper by using concave mirror
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10
Answer:
Because concave mirror acts as converging mirror n converge all the rays at focus which increases the temperature at focus causing paper to burn..
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Concave Mirror are converging mirrors. So, when the parallel rays of sunlight fall on the surface of the mirror, they get reflected to a particular point where the paper kept. As a result, the rays produce heat energy and when the paper reaches its iginition temperature, it began to burn.
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