Which of the following instruments is used to measure the energy of the monochromatic radiation most accurately?

Which of the following instruments is used to measure the energy of th

1.	Which of the following instruments is used to measure the energy of the monochromatic radiation most accurately?
A.	Photoelectric cell
B.	Thermopile
C.	The potential detector
D.	The chemical actinometer
Answer» C. The potential detector

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Which of the following instruments is used to measure the energy of the monochromatic radiation most accurately?

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