Question

Which of the following is a dimension less quantity refractive index,plank constant,gravition constanat,velocity

Answer 1

Answer:

Refractive Index is defined as the relative speed at which light moves through a material with respect to its speed in vacuum. As both the values belong to same quantity (speed), units gets nullified. So Refractive Index is dimensionless quantity.

Explanation:

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Answer 2

Answer:

refractive index is the answser

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