A ray of light travelling in a transparent medium of refractive index n falls, on a surface separating the medium from air at an angle of incidents of 45º. The ray can undergo total internal reflection for the following n,
A. n = 1.25
B. n = 1.33
C. n = 1.4
D. n = 1.5
Answer:D
A ray of light travelling in a transparent medium of refractive index n falls, on a surface separating the medium from air at an angle of incidents of 45º. The ray can undergo total internal reflection for the following n,
A. n = 1.25 B. n = 1.33 C. n = 1.4 D. n = 1.5