Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Physics Optics Refraction and Reflection
A ray of light incident at an angle θ on the face AB of a prism of refractive index 1.5 emerges normally from its face AC. If the angle of the prism is 5°, the angle of incidence θ should be nearly
1
2.5°
2
7.5°
3
22.5°
4
More than one of the above
5
None of the above