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CGP EDU Academic Team
Published on: September 12, 2026
Dimensions of luminous flux are
Text Solution
Verified by ExpertsThe correct answer is:
C
Luminous flux (A6) is the measure of the perceived power of light. Its SI unit is the lumen (lm), which is equivalent to the amount of visible light emitted by a light source at 1 candela (cd) over a solid angle (steradian). The dimensional formula for luminous flux can be derived from the definition of luminous efficacy.
The luminous flux is given as:
[A6] = [L^2 T^{-3} I]
where [L] is length, [T] is time, and [I] is luminous intensity. Therefore, the dimensional formula for luminous flux is represented as ML^{2}T^{-3}I, which corresponds to Option C.
The luminous flux is given as:
[A6] = [L^2 T^{-3} I]
where [L] is length, [T] is time, and [I] is luminous intensity. Therefore, the dimensional formula for luminous flux is represented as ML^{2}T^{-3}I, which corresponds to Option C.
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