Question

An amount Q of heat is added to a monoatomic ideal gas in a process in which the gas performs the work Q/2 on its surroundings. The molar heat capacity for the process will be

(1) R

(2) 2 R

(3) 3 R

(4) 4 R

Answer 1

(3) 3 R

Amount of heat given = Q and the Work done = Q/2