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CBSE Class 10 Answered

sir. What happens when incident ray falls on the surface of a glass slab? what is angle of incident and angle of refraction? Draw the diagram in this case?  
Asked by vinayakumarspanicker | 05 Jun, 2020, 08:31: PM
answered-by-expert Expert Answer
When an incident ray of light is incident on the glass slab then the light ray undergoes refraction. 
The following diagram represents the refraction of light through glass slab: - 
 
Selina Solutions Icse Class 10 Physics Chapter - Refraction Of Light At Plane Surfaces 
 
Angle of incidence : - Angle between the incident ray and normal is called angle of incidence. 
It is denoted by letter 'i' 
 
Angle of refraction: - Angle between the refracted ray and normal is called angle of refraction. 
It is denoted by letter 'r' 
 
Note: - 
If the light ray is incident on the glass slab perpendicularly then there is no refraction. 
In this case the diagram is as follows: - 
 
Answered by Shiwani Sawant | 05 Jun, 2020, 09:07: PM

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