A) suffer total internal reflection in both cases
B) suffer total internal reflection in case 2 only
C) have 100% transmission in case 1
D) have partial reflection and partial transmission in case 2
Correct Answer: D
Solution :
Velocity of light in the medium\[=\frac{3\times {{10}^{-2}}}{0\cdot 2}\times {{10}^{-9}}=\]\[1\cdot 5\times {{10}^{8}}m/s\]. Since, \[\mu =\frac{{{v}_{a}}}{{{v}_{m}}}=\frac{3\times {{10}^{8}}}{1\cdot 5\times {{10}^{8}}}=2\] \[\therefore \]critical angle\[={{\sin }^{-1}}\frac{1}{2}={{30}^{o}}\] Now, both the given angles of incidence are less than critical and will therefore suffer refraction. So, options [a] and [b] are not possible. Further during refraction, a ray gets partially absorbed also. So option [c] is also not possible. Hence correct option is [d].
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