The refractive inidices of filnt glass for red and violet light are 1.613 and 1.632 respectively. Find the angular dispersion prouduced by a thin prism of flint glass having refracting angle `5^@`

Explanation

Deviation of the red light is `dleta_r= (mu_r - 1)A` and deviation of the violet light is `delta_(upsilon) = (mu_(upsilon) -1)A.` the dispersion `= delta_(upsilon) - delta_r =(mu_(upsilon) - mu_r)A`
`=(1.632 - 1.613)xx5^@`
`=0.095^@.`