MCQ
Deviation of $5^{\circ}$ is observed from a prism whose angle is small and whose refractive index is $1.5.$ The angle of prism is
- A$7.5^{\circ}$
- ✓$10^{\circ}$
- C$5^{\circ}$
- D$3 \cdot 3^{\circ}$
✓
Answer
Correct option: B.
$10^{\circ}$
$5=(\mu-1) A=(1.5-1) A \Rightarrow A=10^{\circ}$
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