Physics · Light - Reflection and Refraction

Which of the following statements is true regarding the absolute refractive index of a material medium?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1It has the exact same value for all colours of light in a given optical medium
2It is always less than 1 for all physical media
3It increases significantly with an increase in the temperature of the medium
4It is a dimensionless quantity and its value varies with the wavelength of light✓

Correct answer

It is a dimensionless quantity and its value varies with the wavelength of light

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