Physics
Grade-10
Easy
Question
What is the SI unit of measurement of refractive index of a medium?
- m
- m2
- m/s
- It is unitless
Hint:
The refractive index is a dimensionless number.
The correct answer is: It is unitless
The refractive index is unitless.
- SI unit is a system of internationally accepted units for measurement.
- The refractive index depends on the speed of light and the density of the medium.
- The refractive index is defined as the quotient of the speed of light as it passes through two media.
- Since it is a dimensionless number, it has no SI unit.
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