ifos • paper_1 • waves_oscillations
[UPSC IFoS 2024] Polarisation and Modern Optics (Q328, 3+7=10M)
What are the special features of step-index fibre ? The step-index fibre has core glass and cladding glass with refractive indices 1.68 and 1.5 respectively. Calculate the numerical aperture. Find the critical angle and acceptance angle for entrance of light if the fibre is placed in air.
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