Question

If D is the deviation of a normally falling light beam on a thin prism of angle a and $\delta$ is the dispersive power of the same prism then

• A. D is independent of refractive Index
• B. D is independent of A
• C. $\delta$ is independent of refractive index
• D. $\delta$ is independent of A

Answer 1

Answer: (D)

Using relation $D=({\mu }_v-{\mu }_r)A$

and $\delta =\frac{{\mu }_v-{\mu }_r}{{\mu }_y-1}$ we get,

$\delta$ is independent of $A$