Q. If the refractive angles of two prisms made of crown glass are $10{^\circ}$ and $20{^\circ}$ respectively, then the ratio of their colour deviation powers will be
A) $1\ :1$
B) $2\ :1$
C) $4\ :1$
D) $1\ :2$
Explanation
(d) $\frac{\delta_{1}}{\delta_{2}} = \frac{A_{1}}{A_{2}}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.