Question

When white light is passed through a triangular prism, the colour that will bent the least is .

• A. green
• B. yellow
• C. red

Answer 1

The correct option is C red

Speed of a light is directly proportional to its wavelength.
Red light has the highest wavelength and violet has the lowest wavelength. Therefore speed of red light is more when compared to violet and hence red light will be bent the least and violet light will be bent the most.