Light is made of seven colours. What is the method of separating the colours?
- AThe colours can be separated by a prism
- BThe colours can be separated by a filter
- CThe colours can be separated by plants
- DThe colours cannot be separated
Show answer and explanation
Correct answer: (a) The colours can be separated by a prism
Explanation
White light can be split into its seven colours (VIBGYOR) with a prism, as Isaac Newton showed in 1666. The prism bends each colour by a different amount (dispersion).