Question

Which of the following colour of light undergoes the maximum deviation while passing a glass prism?

• A. Red
• B. Blue
• C. Violet
• D. Green

Answer 1

The correct option is C Violet

Violet undergoes maximum deviation while passing through a prism because it has least wavelength , as we know,

We know, $\nu \times \lambda =c$

Frequency is a constant quantity.So velocity of VIOLET light will be least in the medium.

also,

$\mu =\frac{velocityoflightinvacuum}{velocityoflightinamedium}$

so, refractive index property for violet will be maximum and it will refract the most. and will have the greatest deviation.