Question

A plane transparent glass slab is placed over various colour letter, the letter which appears to be raised the least is

• A. green
• B. indigo
• C. violet
• D. red

Answer 1

Answer: (D)

red

$\begin{array}{c}\text{For red colour the refractive index}\left(\mu \right)\text{is minimum}\\ \text{i.e. it will have maximum apparent depth and appears}\\ \text{least raised}\end{array}$