Question

A student constructed a box type solar cooker and he found that it did not work efficiently.what could be this due to? give any4 possible mistakes in the construction and operation of the solar cooker

Answer 1

box having black base
mirror for reflection
direct contact with sunlight
above all points must be included while making a solar cooker

Answer 2

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instead of using a plastic sheet, the student shod use a transparent glasses sheet to cover the open face of the box . This is because a glass sheet can trap the heat rays of the sun very effectively by producing greenhouse effect.A transparent plastic sheet cannot do that..