An isotropic source of 2 candela produces light flux equal to
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Correct answer: (C) 8π lumen
Explanation
An isotropic source emits into the full solid angle 4π sr, so flux = 4π × I = 4π × 2 = 8π lumen.
From BPSC TRE 1.0 (2023) Computer Science Class 11-12 — Previous Year Paper
This is question 9 of BPSC TRE 1.0 (2023) Computer Science Class 11-12 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.
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