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Consider the following two processes;
I. A heat source at 1200 K loses 2500 kJ of heat to a sink at 800 K
II. A heat source at 800 K loses 2000 kJ of heat to a sink at 500 K
Which of the following statements is true?
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- Process I is more irreversible than Process II
- Process II is more irreversible than Process I
- Irreversibility associated in both the processes are equal
- Both the processes are reversible
Correct Option: B
From Clausius inequality,
| ∮ | < 0 for irreversible process | T |
| i.e., | + | + | + .... < 0 | |||
| T1 | T2 | T3 |
For Process I
| ∮ | = | - | = - 1.042 < 0 | |||
| T | 800 | 500 |
For Process II
| ∮ | = | - | = - 1.5 < 0 | |||
| T | 800 | 500 |
Hence process II is more irreversible than process I.
