1.

A reversible engine converts one - sixth of the heat suplied into work . When the temperature of the sink is reduced by 62^@C, the efficiency of the engine is doubled . The temperatures of the source and sink are

Answer»

`80^@C, 37^@C`
`95^@C, 28^@C`
`90^@C, 37^@C`
`99^@C, 37^@C`

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