Question

Name four factors that affect refractive index of a substance?

Answer 1

1) Speed of light in the medium (Higher the speed of light, lower is the refractive index)

2) Temperature of the medium(When the temperature of medium increases, the speed of light in the medium increases and hence the refractive index decreases).

3) Colour or Wavelength of light(Greater is the wavelength of light in the given medium, its refractive index will be less. Hence refractive index is least for red light with greatest wavelength and greatest for violet light with greatest wavelength)

4) Optical density of the medium (Denser the medium, the speed of light in the medium will be less and hence the refractive index will be more)...

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Answer 2

Factors are as follows -

1. Nature of the material of the medium.

2. Density of the medium.

3. Colour of the light.

4. Wavelength of the light.

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