State the condition under which no change in the direction of propagation of a light ray would take place when it passes from medium a to medium b
Answers
If the angle of incidence will be equal to the zero degree then their will be no changes in the direction of propagation
No change in direction condition occurs based on the following conditions:
• It will not refract and this occurs in the condition in which the “angle between the incident ray” and the “normal ray” becomes zero and no changes occur this is called as the angle of incidence
• In this case when the angle of incidence becomes zero the angle of refraction also becomes zero and here the refracted ray is the ray in which the angle is in between the refracted and the normal ray is called as the angle of refraction
• Both the rays are perpendicular in direction to that of the normal rays
• Thus the rays do not refract and as observed there will be no change of direction of rays
Know more about the incident ray:
Name the angle between the incident ray and the mirror
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The angle between incident ray and reflected ray is 50°.Find the angle of reflection and angle of incidence.
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