If the refractive index of water is 4/3 and that of glass slab is 5/3. Then the critical angle of incidence for which a light ray tending to go from glass to water is totally reflected, is
A. sin-1 (\(\frac {3}{4}\))
B. sin-1 (\(\frac {3}{5}\))
C. sin-1 (\(\frac {2}{3}\))
D. sin-1 (\(\frac {4}{5}\))
Answer:D
If the refractive index of water is 4/3 and that of glass slab is 5/3. Then the critical angle of incidence for which a light ray tending to go from glass to water is totally reflected, is
A. sin-1 (\(\frac {3}{4}\)) B. sin-1 (\(\frac {3}{5}\)) C. sin-1 (\(\frac {2}{3}\)) D. sin-1 (\(\frac {4}{5}\))