Pyrheliometer is an instrument used for.

Measuring high temperatures

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Measuring solar radiations

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Comparing the luminous intensity of the source of light

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Measuring heat radiations

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Solution

The correct option is B Measuring solar radiations
Pyrheliometer is an instrument for measurement of direct beam solar irradiance. Sunlight enters the instrument through a window and is directed onto a thermopile which converts heat to an electrical signal that can be recorded.

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Solar radiation flux is usually measured with the help of which of the following instrument?

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