Question

The angle between the two refracting surfaces of a total reflecting prism is :

• A. ${90}^{\circ }$
• B. ${60}^{\circ }$
• C. ${45}^{\circ }$
• D. ${30}^{\circ }$

Answer 1

The correct option is A ${90}^{\circ }$

Total reflecting prism is another name of isosceles right angled prism.Which completely reflects the light rays entering the prism via total internal reflection.