The efficiency of the solar cooker can be increased by placing a :

concave lens

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convex lens

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convex mirror

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plane mirror

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Solution

The correct option is D plane mirror
A solar cooker contains a box made of insulating material, with its inner surfaces blackened. The top is closed by a glass sheet. The efficiency of this solar cooker can be increased by placing a plane mirror at some inclination with the glass top to enhance more trapping of sunlight.
Hence, the correct option is $D$

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Similar questions

The efficiency of the solar cooker can be increased by placing a ______.

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

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