00:01
Hi there.
00:02
So for the problem, first we need to calculate what is the speed of the light in a liquid that has an indeselfrefraption of 1 .47.
00:15
So we are given that the light has a wavelength of 650 nanometers in vacuum.
00:23
So to obtain the speed in a medium different vacuum, we know that the velocity, should be the speed of life over the index of refraption.
00:39
And we note that the speed of light is 3 times 10 to the 8 meters per second.
00:47
And the index of refraption is 1 .47.
00:52
So plug it is in the calculator we obtain 2 .04 times 10 to the 8 meters.
01:12
Per second and this result is correct because it is a value less than the speed of light as it should be now for part b of this problem we are asked to determine the wavelength of this wave in when they are traveling through the liquid we know that the wavelength is defined as the speed in the medium over the frequency.
01:53
So when we have a wave traveling in the vacuum, we know that that velocity corresponds to the speed of light over the frequency.
02:06
And when it is traveling in a different medium order than vacuum, we will have a different velocity over the frequency...