Question

Total flux produced by a source of 1 cd is

• A. $\frac{1}{4\pi}$
• B. $8\pi$
• C. $4\pi$
• D. $\frac{1}{8\pi}$

Answer 1

Answer: (C)

$4\pi$

Answer 2

Luminous intensity$L = \frac{\varphi}{4\pi} \Rightarrow 1 = \frac{\varphi}{4\pi} \Rightarrow \varphi = 4\pi$.