Assertion (A): From the slope of the line in Figure, we can find permanent dipol

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Question
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(a_e + a_i + ?²_p / 3kT)E.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. 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.