Question

Question 2
The object in which seven colours spread over it appears to be white in colour when rotated is called​

Answer 1

Answer: The Newton disc,

Explanation: ls also known as the Disappearing Colour Disc, is a well-known physics experiment with a rotating disc with segments in different colors (usually Newton's primary colors: red, orange, yellow, green, blue, indigo, and violet or VIBGYOR)