The refractive index of a material with permittivity 16 is given by(a) 16(b) 256(c) 4(d) 8This question was addressed to me in a national level competition.The query is from Brewster Angle in chapter EM Wave Propagation of Electromagnetic Theory

The refractive index of a material with permittivity 16 is given by(a)

1.	The refractive index of a material with permittivity 16 is given by(a) 16(b) 256(c) 4(d) 8This question was addressed to me in a national level competition.The query is from Brewster Angle in chapter EM Wave Propagation of Electromagnetic Theory
Answer» The correct choice is (C) 4 The BEST explanation: The refractive index is the square root of the permittivity. Thus N = √ε. Given that ε = 16, we get refractive index as n = 4. It has no UNIT.

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The refractive index of a material with permittivity 16 is given by(a) 16(b) 256(c) 4(d) 8This question was addressed to me in a national level competition.The query is from Brewster Angle in chapter EM Wave Propagation of Electromagnetic Theory

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