Assertion :Efficiency of a reversible engine is $100$ % (maximum) when the temperature of sink is $- 273^{o} C$ Reason: Efficiency of engine $η = \frac{T_{2} - T_{1}}{T_{2}}$

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Efficiency of a reversible engine is 100% (maximum) when the temperature of sink is $- 273^{o} C$
Reason
Efficiency of engine $η = \frac{T_{2} - T_{1}}{T_{2}}$

$Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.$

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Assertion :Efficiency of a reversible engine is 100% (maximum) when the temperature of sink is −273oC Reason: Efficiency of engine η=T2−T1T2

Reason

Assertion :Efficiency of a reversible engine is $100$ % (maximum) when the temperature of sink is $- 273^{o} C$ Reason: Efficiency of engine $η = \frac{T_{2} - T_{1}}{T_{2}}$