A laser beam with vacuum wavelength 573 nm is incident from air onto a block of...

A laser beam with vacuum wavelength 573 nm is incident from air onto a block of Lucite as shown in the figure below. The line of sight of the photograph is perpendicular to the plane in which the light moves. Take ?₁ to be 61

Expert Solution

efractive inde of lucite is n = 1.5

frequency of light in the medium is the same as it is in vaccum

so the frequency of laser light in lucite is

f_n = c / ?

= ( 3*10^ 8 m/s ) / ( 573 nm )

= 5.24*10^ 14 Hz

wave length of light in medium

?_n = ? / n

= 573 / 1.5 = 382 nm

speed of light in lucite v = f_n ?_n

= 5.24*10^ 14 * 382*10^ -9

= 2001.6810^ 5 m/s

= 2*10^ 8 m/s

genius_generous answered 3 months ago

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