An ideal gas is taken through the cycle A → B → C → A, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process C → A is [2002]

Question

Smart Achievers · Accepted Answer

(1)

$For cyclic process;$

$Q_{cyclic} = W_{A B} + W_{B C} + W_{C A} = 10 J + 0 + W_{C A} = 5 J$

$∴$ $W_{C A} = - 5 J$

Solution

Q.
An ideal gas is taken through the cycle A → B → C → A, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process C → A is [2002]

1 −5 J

2 −10 J

3 −15 J

4 −20 J

Ans.
(1)

$For cyclic process;$

$Q_{cyclic} = W_{A B} + W_{B C} + W_{C A} = 10 J + 0 + W_{C A} = 5 J$

$∴$ $W_{C A} = - 5 J$

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