Medium
Which one is related to Newton's disk?
Explanation
Explanation
Newton's disk is a spinning disc painted with the seven colours of the rainbow (VIBGYOR); when it spins fast, the colours blend together and appear white, demonstrating that white light is actually made up of seven colours. So the correct answer is Seven colours of light, option (3).
PRO TIP
Re-check your working by substituting the answer back into the original question.