JEE Main 2019 Physics question

PhysicsThermodynamicsJEE Main 2019

Half mole of an ideal monoatomic gas is heated at constant pressure of 1 atm from 20°C to 90°C. Work done by gas is close to: (Gas constant R = 8.31 J/mol.K)

Answer: (D)

Solution

W = nRΔT = 0.5 × 8.31 × 70 ≈ 291 J.

Question ID VK-010572