Answer:
C. a ray of light passing from medium A to B will bend toward the normal.
Explanation:
When a ray of light enters from one medium to another, it deviates from its path and bends away towards or away from the normal. The angle of incidence (i) and angle of refraction (r) are related by Snell's law:
\(\frac{sin i}{sin r} =\frac{n_2}{n_1}\)
The refracted ray bends away from normal when light enters from denser medium to rarer medium.
The refracted ray bends towards normal when light ray enters from rarer medium to denser medium.
In the given case, the refractive index of medium A is 1.54 and of B is 2.12. Ray of light enters from medium A to B i.e. from rarer medium to denser medium. Thus, the light ray would bend towards the normal when it enters medium B from A.
