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Physics GK · Q418

Light

Competitive Exams · Physics GK · question 418

Q418

How is the refractive index of a substance related to the speed of light in air?

A.
Refractive index = speed of light in air × speed of light in matter
B.
Refractive index = speed of light in air + speed of light in matter
C.
Refractive index = speed of light in matter/speed of light in air
D.
Refractive index = speed of light in air/speed of light in matter
Answer

Answer: Option D

Solution

Answer: Option D
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