JEE Mains · Physics · STD 11 - 11. thermodynamics
A diatomic gas \((\gamma=1.4)\) does \(400 J\) of work when it is expanded isobarically. The heat given to the gas in the process is ............ \(J\)
- A \(1100\)
- B \(1200\)
- C \(1300\)
- D \(1400\)
Answer & Solution
Correct Answer
(D) \(1400\)
Step-by-step Solution
Detailed explanation
\(Q = nC _{ p } \Delta T =\frac{ n\gamma }{ \gamma -1} R \Delta T\) \(Q =\frac{ \gamma }{\gamma -1}\Delta T =\frac{1.4}{0.4} \times 400=1400 \,J\)
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