An ideal gas with γ = 5/3 is heated at constant pressure. Find the percentage of supplied heat used in external work.
Physics · Mixed Chapter
JEE Main Practice

Question

An ideal gas with γ = 5/3 is heated at constant pressure. Find the percentage of supplied heat used in external work.

G1 Physics · Accepted Answer

Step 1: At constant pressure, W = nRΔT and Q = nCₚΔT. Step 2: W/Q = R/Cₚ = (γ−1)/γ. Step 3: For γ = 5/3, W/Q = [(5/3)−1]/(5/3) = 2/5. Step 4: Percentage = 40%.