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17-Phys-A7 Optics: December 2016

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Definitions and short concept questions
  2. Question 2 Single-slit and grating diffraction, aperture spreading, Rayleigh resolution
  3. Question 3 Apparent depth, ray-transfer matrix arrays, and a two-lens system
  4. Question 4 TE/TM plane waves, interference fringes, and refraction of the fringe pattern
  5. Question 5 Optical-fibre attenuation, Rayleigh scattering, modal dispersion, and numerical aperture
  6. Question 6 Thin-film antireflection coating, normal and oblique incidence

Start with Question 1 →

98-Phys-A7, Optics — National Exams, December 2016. 3 hours; closed book (formula sheet supplied on pages 6–8). Notes 1–7 on the cover page require Q1 and Q2 (mandatory) plus any two of Q3–Q6 for a complete paper; every question is solved below as a full study resource, including all four of Q3–Q6.

Reference texts. Hecht, Optics, 5th ed.; Pedrotti, Pedrotti & Pedrotti, Introduction to Optics, 3rd ed. (matrix methods, Ch. 18; fibre waveguides, Ch. 24; thin films, Ch. 15).

a known artifact of this paper family. The 6 real questions (1–6, each 15 marks) are solved in full below.