What is the wavelength in free space of a 150 MI Iz television signal? According

Question

What is the wavelength in free space of a 150 MI Iz television signal? According to the theory of light, the speed of light in liquids is less than in free space greater than in free space the same as in free space zero, since particles cannot moves in liquids A clear sheet of polaroid is placed on top of a similar sheet so that their polarizing axes an angle of 30 degree with each other. The ratio of the intensity of emerging light to incident unpolarized light is Light which is incident from air is refracted through a transparent material. If the angle of incidence is 30 degree, and the angle of refraction is 20 degree, what is the index of refraction of the material?

Explanation / Answer

17) Wavelength= speed of light/frequency

waveength=(3*10^8)/(1.5*10^8)=2m

18)

The index of refraction of a material is defined by the speed of light in vacuum c divided by the speed of light through the material v:

n = c/v

n>1 for liquid

c>v

v<c velocity in liquid is less than that in free space

18) Intensity of emerging light/intensity of unpolarized light=cos2x=3/4=0.75

19)n2/n1 = sinX1/sinX2

(n/1)=(sin30/sin20)

n=1.46=1.5

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