Question

 Derive a relation between temperature and volume for an adiabatic process. equation of helium gas at temperature of equation undergoes reversible adiabatic expansion from an initial volume of equation to equation. Calculate the final temperature of the gas by assuming that the helium behaves ideally and has equation. 

19 Jan 2026
Answer :
Word Count : 407
Let's solve this **step by step**. ## Step 1: Start with the first law of thermodynamics for an adiabatic process For an **adiabatic process**, there is no heat exchange: [ dQ = 0 ] So, the **first law** becomes: [ dU = -dW ] For an ideal gas: [ dU = n C_V dT ] and [ dW = P,dV ] So: [ n C_V dT = ______ _______ ________ __________ _________ __________ _________ _______ ____.
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