Assertion (A): From the slope of the line in Figure, we can find permanent dipole moment of the molecules. Reason (R): Total polarization of a polyatomic gas is given by P = N(ae + ai + μ2p / 3kT)E.

• Both A and R are true and R is correct explanation of A
• Both A and R are true but R is not correct explanation of A
• A is true but R is false
• A is false but R is true

Correct Answer: Both A and R are true and R is correct explanation of A

Explanation:

The slope of the line in figure is .

Since the total polarization is as given by the expression, we can find the permanent dipole moment of the molecules from the slope.