By examining the double slit interference pattern set up in the lab determine th

Question

By examining the double slit interference pattern set up in the lab determine the width of the individual slit and slits separation. (lambda_ = 632.8nm). Show enough work so that partial credit is possible. The problem is partially graded on the accuracy of your results, so make measurements carefully. Slit width: Slit separation distance: A beam of light strikes a 19 mm acrylic plate as shown below. The index of refraction is 1.2. theta_1 = 22 degree theta_2 = ? d = ? What is the angle of refraction? What is the horizontal displacement, d, of the beam in the plate? How will the angle of refraction change if the index of refraction becomes 24? How would the angle of refraction change if the angle of incidence increased from 22 degrees to 44 degrees?

Explanation / Answer

snells law

1*sin22=1.2*sinx

x=18.185 degrree

d/t=tanx

d=19tan18.185

d=6.24mm

c) 1*sin22=2.4sinx

x=8.97 degree

d)1*sin44=1.2*sinx

x=35.36 degree

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