Physics
In the figure given below, a ray of light PQ is incident normally on the face AB of an equilateral glass prism. Complete the ray diagram showing its emergence into air after passing through the prism. Take critical angle for glass = 42°.
(a) Write the angles of incidence at the faces AB and AC of the prism.
(b) Name the phenomenon which the ray of light suffers at the face AB, AC and BC of the prism.
Refraction Plane Surfaces
46 Likes
Answer
(a) The angle of incidence at the faces AB, i = 0°.
The angle of incidence at the faces AC, i = 60°.
(b) The phenomenon which the ray of light suffers at:
face AB — refraction
face AC — total internal reflection
face BC — refraction
Answered By
32 Likes
Related Questions
Draw a diagram of a right angled isosceles prism which is used to make an inverted image erect.
In the figure, a ray of light PQ is incident normally on the hypotenuse of an isosceles right angled prism ABC.
(a) Complete the path of the ray PQ till it emerges from the prism. Mark in the diagram the angle wherever necessary.
(b) What is the angle of deviation of the ray PQ?
(c) Name a device in which this action is used.
Copy the diagram given below and complete the path of the light ray till it emerges out of the prism. The critical angle of glass is 42°. In your diagram mark the angles wherever necessary.
Draw a neat labelled ray diagram to show total internal reflection of a ray of light incident normally on one face of a 30°, 90°, 60° prism.