Prism
Prism is uniform transparent medium bounded between two refracting surfaces, inclined at an angle.
Angle of Deviation
The angle sub tended between the direction of incident light ray and emergent light fay from a prism is called angle of deviation( δ).
Prism Formula The refractive index of material of prism
Dispersion of Light
The splitting of white light into its constituent colours in the sequence of VIBGYOR, on passing through a prism. is called dispersion of light.
The refractive index μ v > μ R therefore violet colour deviates most and red colour deviates least. i. e., δ v > δ R.