Question

Deviation of $5^o$ is observed from a prism whose angle is small and whose refractive index is $1.5$. The angle of prism is

• A. ${7.5}^o$
• B. ${10}^o$
• C. $5^o$
• D. ${3.3}^o$

Answer 1

The correct option is B ${10}^o$

As we know,

$5=(\mu -1)A=(1.5-1)A\Rightarrow A={10}^o$