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An engine has an efficiency of 1/6. When...

An engine has an efficiency of `1/6`. When the temperature of sink is reduced by `62^(@)C`, its efficiency is doubled. Temperature of the source is

A

372 K and 310 K

B

273 K and 300 K

C

`99^(@)C` and `10^(@)C`

D

`200^(@)C` and `37^(@)C`

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The correct Answer is:
A
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