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| Q. |
A step-index fibre has a numerical aperture of 0.26, a core refractive index of 1.5 and a core diameter of 100micrometer. Calculate the acceptance angle. |
| A. | 1.47° |
| B. | 15.07° |
| C. | 2.18° |
| D. | 24.15° |
| Answer» B. 15.07° | |
| Explanation: sin i = (numerical aperture)/n sin i = 15.07°. | |
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