Material a is water and material b is plexiglass with index of refraction 1.49. The incident light ray makes an angle of 55o with the normal. Obtain the speed of light in material a. A. 2.256 x 108 m/s B. 3.220 x 108 m/s C. 2.088 x 108 m/s D. 3 x 108 m/s

Material a is water and material b is plexiglass with index of refraction 1.49. The incident light ray makes an angle of 55o with the normal. Obtain the speed of light in material a. A. 2.256 x 108 m/s B. 3.220 x 108 m/s C. 2.088 x 108 m/s D. 3 x 108 m/s

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter1: Measurement

Section: Chapter Questions

Problem 11E

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Question

12. Material a is water and material b is plexiglass with index of refraction 1.49. The incident light ray makes an angle of 55o with the normal. Obtain the speed of light in material a.

A. 2.256 x 108 m/s

B. 3.220 x 108 m/s

C. 2.088 x 108 m/s

D. 3 x 108 m/s

Oa = 55°
na (water)=
1.33
а
b
Np (plexiglass)=1.49

Definition Definition Rate at which light travels, measured in a vacuum. The speed of light is a universal physical constant used in many areas of physics, most commonly denoted by the letter c . The value of the speed of light c = 299,792,458 m/s, but for most of the calculations, the value of the speed of light is approximated as c = 3 x 10 8 m/s.

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