An isotropic source has luminous intensity of 5 candela. Its total luminous flux is
Options
- A. 5π lumen
- B. 10π lumen
- C. 20π lumen
- D. 25π lumen
- E. None of the above
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Correct Answer (Detailed Explanation is Below)
C. 20π lumen
Detailed Explanation
For an isotropic source, Φ = 4πI. Hence Φ = 4π × 5 = 20π lumen.
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