Question

The angle of a prism is $6^0$ and its refractive index for green light is 1.5. If a green ray passes through it, the deviation will be :-

• A. ${30}^0$
• B. ${15}^0$
• C. $9^0$
• D. $3^0$

Answer 1

The correct option is D $3^0$

Given,

Angle of prism, $A=6^o$

Refractive index, $\mu =1.5$

Deviation, $\delta =(\mu -1)A$

$=(1.5-1)6^o$

$\delta =3^o$