Q. Which expression correctly relates internal energy (E), heat (q), and work (w)?

कौन सी अभिव्यक्ति आंतरिक ऊर्जा (ई), गर्मी (क्यू), और कार्य (डब्ल्यू) से सही ढंग से संबंधित है?

A
ΔE = q - w
B
ΔE = q + w
C
ΔE = q × w
D
ΔE = q/w

Explanation

Explanation:
This is the first law of thermodynamics:

ΔE = q + w
Where:

  • ΔE = change in internal energy

  • q = heat added to the system

  • w = work done on the system

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