Question 30
Dispersion of Light and ColoursDispersion of light by a glass prism is due to the
- A.different hidden colours of the glass
- B.different speeds of the various colours in glass
- C.defects in the glass
- D.high density of glass.
Show the answer and explanation
Answer: B (different speeds of the various colours in glass)
Explanation
Each colour travels at a different speed in glass, so each is refracted by a different amount and the colours separate.