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JEE Main 12 Apr 2019 Paper 2 Solved Paper

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Question : 29

Total: 90

A Carnot engine has an efficiency of

. When by 62°C , its efficiency is doubled. The temperature of the source and the sink are, respectively,

99°C,37°C
124°C,62°C
37°C,99°C
62°C,124°C

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