Question

If white light travelling in air incidents over glass and undergoes refraction then which colour light deviates maximum
(correct answer + 1, wrong answer - 0.25)

• A. Red
• B. Yellow
• C. Violet
• D. All colours deviate by same angle

Answer 1

The correct option is C Violet

As angle of deviation $\propto \frac{1}{\text{wavelength}}$
And the order of wavelength is $V<I<B<G<Y<O<R$
Therefore, the order of deviation is $V>I>B>G>Y>O>R$
$\therefore$ The violet deviates maximum.