Physics · Geometrical optics · law of refraction and total internal reflection
JEE MainsNEET
A ray goes from A to B with i=45° and r=30°. If speed in A is 2.4×10⁸ m/s, speed in B is closest to:
Options
1.70×10⁸ m/s
2.0×10⁸ m/s
3.39×10⁸ m/s
1.20×10⁸ m/s