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Question
In the following diagram, the path of a ray of light passing through a glass prism is shown :
In this diagram the angle of incidence, the angle of emergence and the angle of deviation respectively are (select the correct option) :
In the following diagram, the path of a ray of light passing through a glass prism is shown :
In this diagram the angle of incidence, the angle of emergence and the angle of deviation respectively are (select the correct option) :
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Solution
The correct option is C Y ,Q and P
The angle made by the incident ray with the normal to the first face of the prism is called incident angle, which is angle Y here. The angle made by the emergent ray with the normal to the surface when it comes out from the prism after refraction is called emergent angle, which is angle Q here. The angle between the incident ray and the emergent ray is called angle of deviation, which is angle P here. Hence, the correct option is D.
The angle made by the incident ray with the normal to the first face of the prism is called incident angle, which is angle Y here. The angle made by the emergent ray with the normal to the surface when it comes out from the prism after refraction is called emergent angle, which is angle Q here. The angle between the incident ray and the emergent ray is called angle of deviation, which is angle P here. Hence, the correct option is D.
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