ISRO Electronics & Communication (ECE) 2011 - Question 1

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Topic: Optoelectronics

_____ is used to describe the light gathering or light collecting ability of an optical fiber

  • A. Critical angle
  • B. Cut-off wavelength
  • C. Numerical aperture
  • D. Acceptance angle

Answer: C. Numerical aperture

Explanation: Detailed explanation not provided in the source.

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