In the problem, from which point the distance of the screen is 10 m?
The deviation of the ray from the original direction is
The deviation d of the spot on the screen is given by
White light is refracted by the triangular prism shown in the figure below. A beam of light enters the prism along a path parallel to the prism base. The light is observed on a screen that is located away from the prism and is perpendicular to the emerging rays. How far apart on the screen are the spots of blue light ( ) and red light ( )
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I'm just confused as to how you're supposed to find the distance between the spots!
I've set up the problem like so:
Now that I've found the angles, how do I find the distance? >.<
Work below (if you care):
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For :
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For :
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For :
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For :
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I have no idea about the distance. That's partly what confused me, too. o.O
I'm assuming it's the distance from the bottom right corner to the screen, although I'm rather clueless because the problem isn't specific.
Hm. I'll try what you suggested and see how it works out. (I'm a bit tired now and am going to bed. haha.) Thanks.