BSNL JTO Practice Questions - BSNL Junior Telecom Officer (JTO) Exam

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A step-index optical fiber has a core refractive index of 1.50 and a cladding refractive index of 1.47. What is the numerical aperture (NA) of this fiber?

0.300 0.225 0.150 0.090

Correct Answer:

0.300

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