A ray from a laser strikes a horizontal mirror and strikes a vertical surface next to...

Question

Question

A ray from a laser strikes a horizontal mirror and

science physics

Answer 1

Answer #1

from the image

theta = arctan(30.9/11.9) = 68.94 degrees

initial angle of incidence = theta(i) = 90 - 68.94 = 21.06 degrees

Answer 2

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