MHT CET 2024 Physics question

The first operation involved in a Carnot cycle is

(A)isothermal expansion.Correct
(B)adiabatic expansion.
(C)isothermal compression.
(D)adiabatic compression.

Answer: (A)

Solution

A Carnot engine works in four reversible steps. Step 1: the gas, in contact with the hot source at , expands isothermally and absorbs heat . Step 2: it expands adiabatically, cooling from to . Step 3: it is compressed isothermally at the sink temperature , rejecting heat

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Question ID VK-099632