| Q.25 | A ray of light that travels obliquely from one transparent medium into another will change its direction in the second medium. The extent of the change in direction that takes place in a given pair of media is expressed in terms of the ______. | |
| Ans | 1. transversal | |
| 2. reflection | ||
| 3. refractive index | ||
| 4. refraction |
Correct Ans Provided: 3