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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
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: -

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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