Question

hw does angle of minimum deviation glass prism vary if incident Violet light is replace by red light

Answer 1

Angle of minimum deviation is directly proportional to refractive index.

Refractive index for red is least while for violet is maximum.

Refractive index is inversely proportional to the wavelength of the light. As red has a higher wavelength than violet light therefore it has a smaller refractive index than violet.