A 4 candela isotropic source produces total luminous flux equal to
Options
- A. 4π lumen
- B. 8π lumen
- C. 12π lumen
- D. 16π lumen
- E. 20π lumen
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Correct Answer (Detailed Explanation is Below)
D. 16π lumen
Detailed Explanation
For an isotropic source, Φ = 4πI. Therefore Φ = 4π × 4 = 16π lumen.
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