When a ray of light emerges from a block of glass, the critical angle – McqOptions

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1.	When a ray of light emerges from a block of glass, the critical angle is
A.	Equal to the angle of reflection
B.	The angle between the reflected ray and the normal
C.	The angle of incidence for which the refracted ray travels along the glass air boundary
D.	The angle of incidence
Answer» D. The angle of incidence

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