A monoatomic gas expands at constant pressure on heating. The percenta

1.	A monoatomic gas expands at constant pressure on heating. The percentage of heat supplied that increases the internal energy of the gas and that is involved in the expansion is(a) 75%, 25%(b) 25%, 75%(c) 60%, 40%(d) 40%, 60%
Answer» Correct Option (c) 60%, 40% Explanation: Fraction of energy supplied for increment in internal energy = 1/γ = 3/5 [AS γ = 5/3 for monoatomic gas] :. Percentage energy = 30/5 = 60% Fraction of energy supplied for external work done = 1 - 1/γ = γ - 1/γ = (5/3 - 1)/5/3 = 2/5 :. Percentage energy = 2/5 x 100% = 40%

A monoatomic gas expands at constant pressure on heating. The percentage of heat supplied that increases the internal energy of the gas and that is involved in the expansion is(a) 75%, 25%(b) 25%, 75%(c) 60%, 40%(d) 40%, 60%

Answer»

Correct Option (c) 60%, 40%

Explanation:

Fraction of energy supplied for increment in internal energy = 1/γ = 3/5 [AS γ = 5/3 for monoatomic gas]

:. Percentage energy = 30/5 = 60%

Fraction of energy supplied for external work done = 1 - 1/γ = γ - 1/γ = (5/3 - 1)/5/3 = 2/5

:. Percentage energy = 2/5 x 100% = 40%