A beam of light strikes the interface between flint glass and air with an incident angle equal to the critical angle of 35.9°, such that the beam undergoes total internal reflection. (Drawing is not to scale.) If the incident angle of the beam of light in flint glass is decreased slightly from 35.9° to 35.8°, the incident beam would be:
A. reflected back into flint glass.
B. transmitted into air.
C. (Both choices (A) and (B).)
D. (Not enough information is given.)
Answer:C
A beam of light strikes the interface between flint glass and air with an incident angle equal to the critical angle of 35.9°, such that the beam undergoes total internal reflection. (Drawing is not to scale.) If the incident angle of the beam of light in flint glass is decreased slightly from 35.9° to 35.8°, the incident beam would be:
A. reflected back into flint glass. B. transmitted into air. C. (Both choices (A) and (B).) D. (Not enough information is given.)