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A carnot's engine works between a source...

A carnot's engine works between a source at a temperature of `27^(@)C` and a sink at `-123 ^(@)C`. Its efficiency is

A

0.5

B

0.25

C

0.75

D

0.4

Text Solution

Verified by Experts

The correct Answer is:
A
Given ,`T_(1)=27^(@)C=(27+273)K=300K`
`"and"" " T_(2)=-123+273=150K`
`"Efficiency"" " eta=1-(T_(2))/(T_(1))=1-(150)/(300)=0.5`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-KINETIC THEORY OF GASES ANDRADIATION-Exercise 1
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  11. A Carnot engine, whose efficiency is 40%, takes in heat from a source ...

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  14. A Carnot engine whose source is at 400 K takes 200 cal of heat and rej...

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  15. A Carnot's engine has an efficiency of 50 % at sink temperature 50^(@...

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  16. An ideal gas heat engine operates in a carnot cycle between 227^(@)C ...

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  17. A Carnot reversible engine converts 1//6 of heat input into work . Whe...

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  18. Consider the statement (A) and (B) and identify the carrect answers. ...

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