JEE Main 202623 Jan, Evening shiftPhysicsMediumThermodynamics163× since 2002
The internal energy of a monoatomic gas is 3nRT. One mole of helium is kept in a cylinder having internal cross section area of 17 cm and fitted with a light movable frictionless piston. The gas is heated slowly by suppling 126 J heat. If the temperature rises by 4 °C, then the piston will move ________ cm. (atmospheric pressure Pa)