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Question

Which of the following will improve the efficiency of a solar cooker?

A
Regularly orienting the solar cooker according to the Sun.
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B
Increasing the span of glass sheet on the top.
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C
Using black coated utensils.
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D
All of the above.
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Solution

The correct option is D All of the above.
To improve the efficiency of a solar cooker, the following steps need to be done:
1. The top mirror of the solar cooker focusses the solar energy onto a small area. Adjusting the mirror helps in continuous focussing of heat energy.
2. Increasing the span of glass sheet on the top allows trapping more energy in the solar cooker.
3. Black coated utensils increases the absorption of heat radiations and increases the efficiency.

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