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The instrument which measures the intensity of solar radiation is called:

  • A.Barometer 

  • B.Energymeter
  • C.Solarimeter
  • D.Speedometer

Answer: C

The instrument is a solarimeter, also called a pyranometer.

It measures the solar radiation falling on a horizontal surface, in watts per square metre, usually by the temperature difference between blackened and reflective sensors under a glass dome. Barometers measure air pressure.

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