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Question

Name the device for detecting and measuring small amount of thermal energy.

A
Pyranometer
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B
Pyrometer
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C
Barrater
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D
Bolometer
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Solution

The correct option is D Bolometer
Solution:
Bolometer, instrument for measuring radiation by means of the rise in temperature of a blackened metal strip in one of the arms of a resistance bridge. Thus we can say that Bolometer is the device used for detecting and measuring small amount of thermal energy.
The Correct Opt=D

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