A carnot engine has an efficiency of `40%` when the sink temperature is `27^(@)C.` The source temperature will be

Explanation

To find the source temperature (T1) of a Carnot engine with a given efficiency and sink temperature, we can follow these steps:

### Step 1: Understand the Efficiency Formula
The efficiency (η) of a Carnot engine is given by the formula:
\[ \eta = 1 - \frac{T_2}{T_1} \]
where:
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