IdentificationEasy1 mark
Name the principle used to find the value in part (a).
Topic: Principle of reversibility
Question wording verified against source paper
Answer
Exam answer
Principle of reversibility of light.
Explanation
The light path is reversible, so reciprocal relative refractive indices are obtained.
More from Refraction of Light at Plane Surfaces
From the figure given below, the refractive index of medium B with respect to medium A (ₐμᵦ) is:
(a) sin 45° / sin 30°
(b) sin 30° / sin 45°
(c) sin 45° / sin 60°
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sin i / sin r
at the first surface and at the second surface?2026