Question

For a given prism $\theta$ and $\delta$ are angular dispersion and deviation correct relation is

• A. $\theta \propto \delta$
• B. $\theta \propto \frac{1}{\delta }$
• C. $\theta \propto {\delta }^2$
• D. $\theta \alpha \propto \frac{1}{{\delta }^2}$

Answer 1

The correct option is A $\theta \propto \delta$

Angular dispersion is the difference between the angles of minimum deviation of a pair i.e., $\Delta =({\theta }_m{)}_v-({\theta }_m{)}_R$

where, v and R represent violet & red colour

$\Rightarrow \theta \propto 8$.