A Carnot engine operating between temper...

A Carnot engine operating between temperatures `T_1` and `T_2` has efficiency 1/6. When `T_2` is lowered by 62 K, its efficiency increases to 1/3. Then `T_1` and `T_2` are, respectively

372 K and 330 K

330 K and 268 K

310 K and 248 K

372 K and 310 K

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