A lens is thicker in the middle than at is edge. Can it be used to burn a piece of paper by using sunlight?
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Yes,Because the lens which is thick in the middle is Convex lens which burns a piece of paper by using sunlight
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Answer: Yes paper can be burnt using a lens that is thicker at middle and thinner at the edges.
Explanation: The specific lens used is a convex lens which converges the light rays falling on it thus increasing temperature of all the light rays as they fall at one point
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