Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Physics Thermodynamics First law of thermodynamics
The internal energy change for a system is + 20 Cal and the work done is – 200 Cal. Find the heat exchanged between the system and the surrounding.
1
220 Cal
2
- 220 Cal
3
- 180 Cal
4
More than one of the above
5
None of the above