The dielectric constant of water is 80, but refractive index

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

Answers and Replies

  • #2
Khashishi
Science Advisor
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Dielectric constant and n are frequency dependent. Are you sure you got values at the same frequency?
 
  • #3
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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?
 
  • #4
DrClaude
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This will have to be posted in a homework forum, with the template properly filled out.

Thread closed.
 

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