Question

Solar devices having mirrors is a concave or convex

Answer 1

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A convex mirror does have a focalpoint, but it is an imaginary point that exists behind the mirrored surface. The light will reflect up and away from the focal point of... Concave mirrors are used in solar furnaces, because concave mirrors are the only type of mirror that reflects light in toward a single focal point.

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Answer 2

concave mirror is used in solar devices