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What kind of mirror-concave, convex or p...

What kind of mirror-concave, convex or plane-would be best suited for use in a solar cooker ? Why ?

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A concave mirror reflector would be best suited for use in a solar cooker. This is because a concave reflector converges a large amount of sun's heat rays to a small area at its focus due to which a high temperature is produced in its focus area (which is suitable for baking and frying). such a high temperature cannot be achieved in a solar cooker by using a plane mirror reflector. Convex mirror reflector, being a diverging mirror, cannot be used at all in a solar cooker.
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