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Physics Hard CSS FPSC Uploaded: 13 Jul 2026

What is the unit of luminous intensity in the SI system?

  • A Lux
  • B Lumen
  • C Watt
  • D Candela
Correct Answer: Option D — Candela
Explanation:
The Candela is the SI base unit of luminous intensity representing the power emitted by a light source in a particular direction per unit solid angle.
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