Light enters a substance from air at 45.0° to the normal. It continues within the substance at 25.0° to the normal. What is the critical angle for this substance when it is surrounded by air? 25.20 60.3° there is no critical angle 90.0° 36.8° 45.2°

Light enters a substance from air at 45.0° to the normal. It continues within the substance at 25.0° to the normal. What is the critical angle for this substance when it is surrounded by air? 25.20 60.3° there is no critical angle 90.0° 36.8° 45.2°

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter38: Refraction And Images Formed By Refraction

Section: Chapter Questions

Problem 104PQ

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Concept explainers

Dispersion of White Light

Snell’s law is a formula that gives a relation between the angle of incidence and angle of refraction and is given as:

Question

Light enters a substance from air at 45.0° to the normal. It continues within the substance at 25.0° to the
normal. What is the critical angle for this substance when it is surrounded by air?
25.2°
O
Othere is no critical angle
O
O
60.3°
90.0°
36.8°
45.2°

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