Question

The angle of prism is $3^{\circ }$. The refractive index is $1.5$. The angle of minimum deviation is .

• A. $2^{\circ }$
• B. ${1.5}^{\circ }$
• C. ${0.5}^{\circ }$
• D. $1^{\circ }$

Answer 1

The correct option is B ${1.5}^{\circ }$

Minimum deviation = $A(\mu -1)=3\times (1.5-1)={1.5}^{\circ }$