Q. The mathematical form of the first law is

प्रथम नियम का गणितीय रूप है

A
Q = W + ΔU
क्यू = डब्ल्यू + Δयू
B
Q = ΔU – W
क्यू = Δयू - डब्ल्यू
C
Q = ΔU + W
क्यू = ΔU + डब्ल्यू
D
Q = ΔU/W
क्यू = ΔU/W

Explanation

The first law of thermodynamics is expressed as:

Q=ΔU+WQ = \Delta U + W

where:

  • QQ = heat added to the system

  • ΔU\Delta U = change in internal energy

  • WW = work done by the system

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