Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Physics Optics Refraction and Reflection
If the radius of curvature of the curved surfaces of a convex lens are 10 cm and 20 cm with a focal length of 24 cm, find the refractive index of glass.
1
2.1
2
1.41
3
1.5
4
1.277
5
None of the above/More than one of the above.