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  • Given below are two statements: one is labelled as Assertion A and  the other is labelled as Reason R Assertion A: Efficiency of a reversible heat engine w

Given below are two statements: one is labelled as Assertion A and  the other is labelled as Reason R

Assertion A: Efficiency of a reversible heat engine will be highest at -273^{\circ} \mathrm{C} temperature of cold reservoir.
Reason R: The efficiency of Carnot's engine depends not only on temperature of cold reservoir but it depends on the temperature of hot reservoir too and is given as \eta=\left(1-\frac{T_{2}}{T_{1}}\right).

In the light of the above statements, choose the correct answer from the options given below

Option: 1

Both and are true but is NOT the correct explanation of A


Option: 2

Both and are true and is the correct explanation of A


Option: 3

A is false but is true


Option: 4

A is true but is false


Answers (1)

best_answer

\eta=1-\frac{\mathrm{T}_{\mathrm{L}}}{\mathrm{T}_{\mathrm{H}}}=\frac{\mathrm{T}_{\mathrm{H}}-\mathrm{T}_{\mathrm{L}}}{\mathrm{T}_{\mathrm{H}}}

Efficiently of Carnot's engine will be highest at -273^{\circ}=0 \mathrm{~K}
 

Posted by

Pankaj

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