MCQOPTIONS
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| 1. |
When a ray of light is travelling from a denser medium to a rarer medium and the angle of incidence is equal to the critical angle then the angle of refraction in the rarer medium is ___________. |
| A. | 180° |
| B. | 0° |
| C. | 90° |
| D. | 45° |
| Answer» D. 45° | |