Q102 of 141 Page 14

Give the purpose of mirror and glass sheet in solar cooker.

In solar cooker glass sheet acts as a transparent medium which allows light into the medium. Mirror reflects the light which emerges from the cooker.

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100 Draw a neat diagram of the box type solar cooker. Label it and explain the function of each part. 101 Why is the sun very hot than any other hot body and how does it continously emit solar energy? Justify. 103 Why are solar cells not used effectively? 104 Give the limitations in using commercially wood as fuel, over windmills.