Question

How does the angle of minimum deviation of a glass prism vary. If the incident violet light is replaced by red light ? Given reason.

Answer 1

Since reflective index $\times \frac{1}{wavelengthoflight}$

hence when wavelength of light increase bu use of red light instead of violet light, Reflective index increases which is directly proportional to minimum deviation as,

$\mu =\frac{sin\left(\frac{A+Smin}{2}\right)}{sin\left(A/2\right)}$