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There is a non-AAMC practice question that goes as follows:
"If a light ray strikes an interference fringe at a 35 degree angle with respect to the normal plane, the reflected angle with respect to the interference fringe will be..." I made an educated guess of the angle being greater than 35 degrees, and got it right.
I'm not quite sure how to correctly solve such a problem. The explanation states the reflected angle is the same as the incident angle but is also complementary to the incident angle, therefore making the reflected angle 55 degrees. I was actually assuming the reflected angle would be 180-35 = 145 degrees. Any help?
"If a light ray strikes an interference fringe at a 35 degree angle with respect to the normal plane, the reflected angle with respect to the interference fringe will be..." I made an educated guess of the angle being greater than 35 degrees, and got it right.
I'm not quite sure how to correctly solve such a problem. The explanation states the reflected angle is the same as the incident angle but is also complementary to the incident angle, therefore making the reflected angle 55 degrees. I was actually assuming the reflected angle would be 180-35 = 145 degrees. Any help?