Physics - Geometrical Optics Question with Solution | TestHub

Wavelength of red light is more than violet light.

Refractive index of a medium is different for light rays of different wave lengths. Larger the wavelengths, the lesser is refractive index.

Now angle of minimum deviation increases with increment in  refractive index,$\delta =\left(\mu -1\right)\text{A}$
$\therefore$Angle of minimum deviation for red light is less than the violet.