Which of the following is a necessary condition for total internal reflection?
A. The angle of incidence in the denser medium must be greater than the critical angle for the two media
B. The angle of incidence in the rarer medium must be greater than the critical angle for the two media
C. The angle of incidence in the denser medium must be lesser than the critical angle for the two media
D. The angle of reflection in the denser medium must be greater than the critical angle for the two media
Answer:A
Which of the following is a necessary condition for total internal reflection?
A. The angle of incidence in the denser medium must be greater than the critical angle for the two media B. The angle of incidence in the rarer medium must be greater than the critical angle for the two media C. The angle of incidence in the denser medium must be lesser than the critical angle for the two media D. The angle of reflection in the denser medium must be greater than the critical angle for the two media