Question Detail

PHY 104 Reflection and Refraction of Light Objective Question

Question

The index of refraction (n) of a medium is defined as the ratio of what two quantities?
Options
A The speed of light in the medium to the speed of light in vacuum.
B The wavelength of light in vacuum to the wavelength of light in the medium.
C The speed of light in vacuum to the speed of light in the medium.
Correct Answer
D The frequency of light in vacuum to the frequency of light in the medium.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 36 defines the index of refraction: 'The index of refraction of the medium is the ratio of the speed of light in vacuum to the speed of light in the medium: n = c/v.'

Hint

Recall that the speed of light in a vacuum, 'c', is the maximum speed.

Question Info