Question

how does the angle of min deviation differ when violet light is wswitched woth red light

Answer 1

I think.. it’s possible when angle is equal to critical angle

Answer 2

Answer:

refractive index of any light is inversely proportional to the wavelength. Therefore, refractive index of red light is less. In turn, angle of minimum deviation has a linear dependance with refractive index. Thus, when violet light is replaced with red light, angle of minimu deviation decreases.