Q18 of 269 Page 140

Explain why, a plane mirror reflector is used in a box-type solar cooker.

Usually, a plane mirror reflector is attached on the top of the box. This is because the plane mirror reflector increases the efficiency of solar cooker by reflecting more and more sunlight inside the box.


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

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Name that part of a box-type solar cooker which allows the sun’s rays to enter the box but does not allow inside heat to go out.

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What are the advantages and disadvantage of using a solar cooker?

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What is a solar cell? Draw the labeled diagram of a solar cell.