The figure shows a ray of light that passes from the white material A (with index of refraction n₁ = 1.1) into the grey material B. (a) In which material does the light travel faster? A) Material A B) Material B (b) What is the index of refraction of material B? 30% 60° A 70° B 20°

The figure shows a ray of light that passes from the white material A (with index of refraction n₁ = 1.1) into the grey material B. (a) In which material does the light travel faster? A) Material A B) Material B (b) What is the index of refraction of material B? 30% 60° A 70° B 20°

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter25: Reflection And Refraction Of Light

Section: Chapter Questions

Problem 55P

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Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

Question

14. The figure shows a ray of light that passes from the white material
A (with index of refraction nA = 1.1) into the grey material B.
(a)
In which material does the light travel faster?
A) Material A B) Material B
(b) What is the index of refraction of material B?
30°
60°
A
70° B
20°

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