A gas present in a container connected to frictionless, weightless piston operating always at the one-atmosphere pressure such that it permits flow of gas outside (with no adding of gas.) The graph of n Vs T (Kelvin) was plotted & was found to be a straight line with coordinates of extreme points as (300,2) & (200,3). Find out the (i) relationship between n & T (ii) relationship between V&T (iii)Maximum or minimum value of 'V':