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| Q.46 | With regard to Total internal reflection in an optical fiber, which statement is correct? | |
| Ans | 1. Incidence angle is less than critical angle | |
| 2. When refractive index of core is less than the refractive index of cladding | ||
| 3. Incidence angle is greater than critical angle | ||
| 4. It only depends on diameter of the core and cladding |
Correct Ans Provided: 3
