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| Q.48 | What happens if the angle of incidence I (the angle the ray makes with the line perpendicular to the interface between the two substances) is less than the critical angle? | |
| Ans | 1. The ray refracts and moves closer to the surface. | |
| 2. The ray terminates. | ||
| 3. The ray bends along the surface. | ||
| 4. The ray reflects (makes a turn) and travels again in the denser substance. |
Correct Ans Provided: 1
