Q33 of 269 Page 141

The value of solar constant is

The solar constant, is the conventional name for the mean solar electromagnetic radiation (the solar irradiance) per unit area that would be incident on a plane perpendicular to the rays, at a distance of one astronomical unit (AU) from the Sun (roughly the mean distance from the Sun to the Earth).

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31

The part of box-type solar cooker which is responsible for producing greenhouse effect is:

 32

Solar cells are made of:

 34

The radiations present in sunlight which make a solar cooker work are

 35

In order to make an efficient solar cooker, the cover box should be made of :