Q120. According to the first law of thermodynamics, ΔU = Q + W, where ΔU Is the increase in internal energy of the system, Q is the heat transferred to the system and W is the external work done by the system.Which of the following is NOT a correct expression?Physics — NUST Mock 5 — Question 120 of 200A. At constant temperature: Q = -WB. When no work is done: ΔU = QC. In gaseous system: ΔU = Q + P Δ VD. When work is done by the system: ΔU = Q - WPractice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →