Q
Which of the following statements related to dispersion are true? (1) Red light bends the most when passing through a glass prism. (2) The angle of deviation is the same for all colours. (3) Dispersion is one of the phenomenon responsible for the formation of a rainbow. (4) The speed of light decreases as the light goes from air into the prism.
RRB Group D
05 Aug, 2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:
B
Both statements 3 and 4 only
The correct choice is Both statements 3 and 4 only. It follows from the laws of reflection/refraction and the standard image-formation properties of lenses, mirrors or optical systems.