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Answer the Following Question. Why Does Obtaining the Image of the Sun on a Paper with the Help of a Concave Mirror Burn the Paper? - Science and Technology

Answer in Brief

Answer the following question.

Why does obtaining the image of the sun on a paper with the help of a concave 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. Thus a lot of heat is produced at that point. 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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Balbharati Science and Technology 9th Standard Maharashtra State Board
Chapter 11 Reflection of Light
Exercise | Q 1.5 | Page 127
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