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Q: A ray of light travelling in air enters a glass slab. Which of the following statements is/are correct? (i) Angle of incidence is greater than the angle of refraction (ii) Angle of incidence is equal to angle of emergence (iii) The emergent ray is parallel to the incident ray
  • A. Both (i) and (ii)
  • B. (i), (ii) and (iii)
  • C. Both (i) and (iii)
  • D. Both (ii) and (iii)
Correct Answer: Option B - A ray of light travelling in air enters a glass slab. The following conditions holds true for the light- (i) Angle of incidence is greater than the angle of refraction. (ii) Angle of incidence is equal to angle of emergence (iii) The emergent ray is parallel to the incident ray
B. A ray of light travelling in air enters a glass slab. The following conditions holds true for the light- (i) Angle of incidence is greater than the angle of refraction. (ii) Angle of incidence is equal to angle of emergence (iii) The emergent ray is parallel to the incident ray

Explanations:

A ray of light travelling in air enters a glass slab. The following conditions holds true for the light- (i) Angle of incidence is greater than the angle of refraction. (ii) Angle of incidence is equal to angle of emergence (iii) The emergent ray is parallel to the incident ray