science
Grade-7
Easy
Question
During normal incidence, the angle of incidence is equal to the angle of refraction = ___ degrees.
Hint:
0 degrees
The correct answer is: 0
Angles of incidence and reflection are calculated with respect to the normal. For normal incidence, the incident ray is along the normal itself. So the angle of incidence is 0. From the laws of reflection, the angle of incidence is equal to the angle of reflection.
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