Question

i) Explain Snell's law with the help of proper diagram.
ii) What is absolute refractive index?​

Answer 1

Answer:

• The ration is angel of incidence and angle of refraction is always constant, this known as snell's law.
• sin(i)/sin(r) = constant
• Absolute refraction index is ration of speed of light in vacuum and speed of light in that medium.

Answer 2

Snell's Law and absolute refractive Index

Explanation:

• The ratio of sine of angle of incidence (i) to the sine of angle of refraction (r) is a constant ,for a light of constant wavelength and a given pair of media i.e.

                          $\frac{ Sin i}{Sin r} = constant = \mu$

        here,μ is refractive index.

• In the above figure, A is point of incidence. BA is incident ray. AC if refracted ray. NN  ′  is normal to interface. i is angle of incidence. r is angle of refraction & Snell's law states that

                          $\frac{Sin i}{Sin r} = Constant = Refractive Index$

• Absolute refractive index: When the light is going from vacuum to another medium, then the value of refractive index is called the absolute refractive index.

Learn more about refractive index

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