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Q.

The purpose of the glass cover on top of a box–type solar cooker is to:

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a

Allow one to see the food being cooked

b

Allow more sunlight into the box

c

Prevent dust from entering the box

d

Reduce heat loss by radiation

answer is D.

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Detailed Solution

The purpose of the glass cover on top of a box–type solar cooker is to reduce heat loss by radiation.
Box–type solar cooker is a device which is used for cooking food by utilizing solar energy. The solar cooker is kept in the sunlight, and the food inside it gets cooked. A glass cover is placed on the top of the cooker so that heat loss can be reduced from the cooker. The major disadvantage of this cooker is that this cannot be used at night and also it cooks food very slowly.

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