# White light is passed through a prism of angle 5^@. If the refractive indices for red and blue colours are 1.641 and 1.659 respectively, calcula

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White light is passed through a prism of angle 5^@. If the refractive indices for red and blue colours are 1.641 and 1.659 respectively, calculate the angle of deviation between them, also calculate the dispersive power.

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delta=(mu_y-1)A=((mu_r+mu_0)/(2)-1)A
=((1.641+1.659)/(2)-1)xx5^@=(1.65-1)xx5^@
=3.25^@
omega=(mu_b-mu_r)/(mu_y-1)=(1.659-1.641)/(1.650-1)=0.028