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प्रश्न
______ this is the unit of refractive index.
पर्याय
cm
m
degree
Refractive index has no unit
MCQ
रिकाम्या जागा भरा
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उत्तर
Refractive index has no unit this is the unit of refractive index.
Explanation:
Refractive index is defined as the ratio of the speed of light in a vacuum to the speed of light in a given medium (n = `c/v`). Because it is a ratio of two identical physical quantities (velocities), their units cancel each other out, leaving it as a dimensionless number.
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