Graphical representation of Kelvin's law - Curve '2' indication

Q.  In the following graph what does curve 2 represent?.
Graphical representation of kelvins law
- Published on 23 Nov 15

a. Relation between annual charge and the area of cross section.
b. Relation between annual cost of energy wasted and area of cross section.
c. Both (a) and (b).
d. None of these.

ANSWER: Relation between annual cost of energy wasted and area of cross section.

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