4 15 points 1 Previous Anse\'s SerPSET 35 P014 Notes Ask Your Teach A laser beam

Question

4 15 points 1 Previous Anse's SerPSET 35 P014 Notes Ask Your Teach A laser beam with vacuum wavelength 643 nm is incident from air onto a block of Lucite as shown is the figure below. The line of sight of the photograph Is perpend cular to the p'ane in which the light moves. Take 0, to be 65*. Recall that the index of refraction of air is 1 and Licite is 1.s0 aciras Normal Refeciod ray rny Refraned ray (a) Find the speed of the lighht in Lucite (b) Find the freqvency of the light in Lucite (c) Find the wavelength of the light in Lucne 83.51 Need help? Lnnom

Explanation / Answer

(A) v = c / n

v = (3 x 10^8) / (1.50)

v = 2 x 10^8 m/s

(B) f = v / wavelength = (3 x 10^8) / (643 x 10^-9)

f = 4.666 x 10^14 Hz

(C) wavelength = 643 nm / 1.50

= 428.7 nm

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