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July 4, 2015

Homework Help: Physics

Posted by Barry on Saturday, March 17, 2012 at 11:42am.

A prism, made of glass of refractive index 1.50, has two plane faces at an angle 33 to each other. A ray of light enters the glass from one side perpendicular to that face and emerges through the other.

Part A:
As the ray enters the glass, what is its angle of incidence ?
Give your answer in degrees.

PartB:
Just before the ray emerges from the glass, what is its angle of incidence ?
Give your answer in degrees.

Part C:
If the prism is in air calculate the deviation of the ray.
Give your answer in degrees. Remember, you're being asked for the deviation angle, not the angle of refraction. The deviation angle is the difference between the incidence and refraction angles at the glass/air interface.

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