The dielectric constant of water is 80, but refractive index

[pallab]

The dielectric constant of water is 80, however its refractive index is 1 ·33 invalidating
the expression n*n=ε. why?

 

[Khashishi]

Dielectric constant and n are frequency dependent. Are you sure you got values at the same frequency?

 

[pallab]

Dielectric constant and n are frequency dependent. Are you sure you got values at the same frequency?

No.
Actually it is a exam question with 4 options, given below-
(1) the water molecule has no permanent dipole moment
(2) the boiling point of water is 100 °C
(3) the two quantities arc measured by different experiments
(4) water is transparent to visible light

It seems that option (3) is correct .
what do you think?

 

[DrClaude]

This will have to be posted in a homework forum, with the template properly filled out.

Thread closed.