A ray of light suffers minimum deviation when incident on a prism having angle of the prism equal to 
. The refractive index of the prism material is 
. The angle of incidence (in degrees) is ________.
Text Solution
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To find the angle of incidence when a ray of light experiences minimum deviation in a prism, we use the formula for the refractive
index 
:
Given:
The angle of the prism, 
The refractive index of the prism material,
Minimum deviation, 
At minimum deviation, the angle of incidence 
equals the angle of emergence 
. Therefore, the relation between the angle of minimum deviation and the angle of the prism is represented as:
Solving for 
:
Thus, the angle of incidence is 
.
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