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Refraction and Laws of Refraction

What is the u...

Question

What is the unit of the refractive index?

A

Metre

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B

Kilogram

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C

Seconds

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D

No unit

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Solution

The correct option is D No unit
Refractive index is the ratio of speeds of light in the first medium. It is also defined as the ratio of the sine of angle of incidence and the sine of angle of refraction.
Hence, it is unitless.

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Similar questions

What is the unit of refractive index ?

Q. The unit of refractive index is:

^i

decrease a unit vector along incident light ray

^r

a unit vector along refracted ray into a medium of refractive index

μ

^n

unit vector normal to boundary of medium directed towards incident medium, then law of refraction is

Q. A unit vector along the incident ray of light is

^i

. The unit vector for the corresponding refracted ray of light is

^r \cdot^n

, a unit vector normal to the boundary of the medium and directed towards the incident medium. If

μ

is the refractive index of the medium, then Snell's law (second law) of refraction is :

Q. Define refractive index? Mention its SI unit, if any.

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