Question:medium

Match the instruments in Group I with the physical quantities they measure in Group II. \[ \begin{array}{|c|c|} \hline Group I & Group II
\hline (P) \ \text{Goniophotometer} & (1) \ \text{Electromagnetic Energy at Specific Wavelengths of Light}
(Q) \ \text{Pyrheliometer} & (2) \ \text{Luminous Flux of Directed Light Sources}
(R) \ \text{Spectrophotometer} & (3) \ \text{Direct Solar Irradiance}
(S) \ \text{Forward-Looking Infrared Camera} & (4) \ \text{Temperature}
& (5) \ \text{Global Solar Radiation}
\hline \end{array} \]

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Remember: Goniophotometer → Light flux, Pyrheliometer → Solar irradiance, Spectrophotometer → Wavelength energy, FLIR Camera → Temperature.
Updated On: Nov 25, 2025
  • P-5, Q-2, R-1, S-3
  • P-2, Q-3, R-1, S-4
  • P-2, Q-3, R-1, S-5
  • P-5, Q-1, R-2, S-4

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