The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of…

Question

The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency $A \times 10^{12} \, \text{hertz}$ and that has a radiant intensity in that direction of $\frac{1}{B}$ watt per steradian. ’ $A$ ’ and ’ $B$ ’ are respectively:

A
$540$ and $1$
B
$540$ and $683$
C
$450$ and $1$
D
$450$ and $683$

Accepted Answer

B. **$$540$$** and **$$683$$**

Answer

A. **$$540$$** and **$$1$$**

Answer

C. **$$450$$** and **$$1$$**

Answer

D. **$$450$$** and **$$683$$**

Answer & step-by-step solution

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