The internal energy change in a system that has absorbed 2 k cal of heat and done 500 J of work is :

1. A. 7900 J
2. B. 8900 J
3. C. 6400 J
4. D. 5400 J

Attempt this NEET 2009 Physics question free — pick an option to reveal the correct answer and a step-by-step explanation. Then join NEET Mastery Quest to practise 15,000+ PYQ and 2027-syllabus questions.