Question

Calculate dispersive power of a transparent material with the given:
$n_v=1.56,n_r=1.54,n_y=1.55$

Answer 1

Given,
$n_v=1.56$
$n_r=1.55$
$n_y=1.55$
Let dispersive power be $\omega$
$\omega =\frac{n_v-n_r}{n_y-1}=\frac{1.56-1.54}{1.55-1}=\frac{0.02}{0.55}$
$=\frac{2}{55}$