For a certain gas the ratio of specific heats is given to be γ = 1.5; for this gas:
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For a certain gas the ratio of specific heats is given to be γ = 1.5; for this gas:

G1 Physics · Accepted Answer

Step 1: γ = 1.5 = 3/2 = Cₚ/Cᵥ. Step 2: Thus Cₚ = (3/2)Cᵥ. Step 3: Mayer’s relation is Cₚ − Cᵥ = R. Step 4: [(3/2) − 1]Cᵥ = R, so Cᵥ = 2R. Step 5: Cₚ = γCᵥ = (3/2) × 2R = 3R. Final answer: (B).