The figure below shows the plot of versus P for oxygen gas at two different temperatures.Read the following statements concerning the above curves :(i) The dotted line corresponds to the 'ideal gas' behaviour.(ii) T1 > T2 (iii) The value of at the point where the curves meet on the y-axis is the same for all gases.Which of the above statement is true ?
The coefficient of linear expansion of a crystal in one direction is and that in every direction perpendicular to it is . The coefficient of cubical expansion is :