Select the correct option for each of the following questions
22021· Spectrum· 1 mark
The refractive index of a diamond is 2.4. It means that:
(a) the speed of light in vacuum is equal to 1/2.4 times the speed of light in diamond
(b) the speed of light in the diamond is 2.4 times the speed of light in a vacuum.
(c) the speed of light in a vacuum is 2.4 times the speed of light in the diamond,
(d) the wavelength of light in diamond is 2.4 times the wavelength of light in vacuum.