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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 | 5th Jun, 2020, 08:31: PM

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 | 5th Jun, 2020, 09:07: PM