Question

The following table given the value of the angle of deviation for different values of the angle of incidence, for a triangular prism : Angle of incidence 33°, 38°, 42°, 52°, 60°, 71° Angle of deviation 60°, 50°, 46°, 40°, 43°, 50° (a) For what value of the angle of incidence, is the angle of emergence likely to be equal to the angle of incidence itself

Answer 1

The angle at 40 degree , it will emerge.

Given:

Angle of incidence 33°, 38°, 42°, 52°, 60°, 71°
Angle of deviation 60°, 50°, 46°, 40°, 43°, 50°

To find: Angle of incidence meet angle of emergence.
Solution:

The angle of emergence is the angle of the light arising out of a medium (for an instance a jug stone accompanying parallel parts). The first medium maybe air and the medium not definite maybe water or a cup strip accompanying parallel hands. The indication of light travels below at an angle through the air and enters the jug.
The Incident angle refers to the angle 'tween the impact management and the complete surface. For a upright impact, this angle is 90 strengths. A number of exploratory results have proved that the deterioration rate of the material changes accompanying the occurrence angle.

Hence the graph is given in the below figure. In this 40 degree is the solution.

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