The difference between volume and pressure coefficients of an ideal gas is :

$Assertion$: gases are characterised with two coefficients of expansion

$Reason$: when heated both volume and pressure increase with the rise in temperature

A sample of an ideal gas occupies a volume V at pressure P and absolute temperature T. The mass of each molecule is m. The equation for density is

A given mass of ideal gas has volume (V) at pressure (P) and the room temperature. If its pressure is first increased by 50% and then decreased by 50% (both at constant temperature only), the volume becomes.