In this figure a ray of light is projected through glass at varied angles of incidence. Suppose a ray of light inside the glass is incident on the glass–air surface (bottom of glass) in a way that makes the ray on the air side emerge at nearly 90° with respect to the normal. If the angle of the light ray inside the glass hits the surface at an even greater angle relative to the normal:
a. the emerging light ray will have an angle less than 90° with respect to the normal.
b. the light ray cannot escape the glass.
c. there is no reflected ray within the glass.
d. the refraction occurs at the complement of the angle calculated from Snell's law.
e. the refraction occurs at the supplement of the angle calculated from Snell's law.
b
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