A. undeviated and undisplaced at a lower speed
B. deviated and undisplaced at a lower speed
C. deviated and displaced at a lower speed
D. undeviated and displaced at a faster speed
Correct Answer:
Option A – undeviated and undisplaced at a lower speed
Explanation
The angle of refraction will be zero as the angle of incidence is zero in this case. This is a rule, that whenever a ray strikes perpendicularly or normally to a surface, no refraction will take place and hence the ray will pass through without deviating from its path.
