Why does'nt light bend when it falls perpendicularly on surface?(like glass slab)...Please explain with suitable diagram.
Asked by jgprmr | 17th Jun, 2017, 03:34: AM
If the incident ray falls on the glass slab perpendicularly or normally, it goes inside the slab un-deviated i.e there is no bending of light because of the following reasons:
As the incident rays passes along the normal to the surface, the angle of incidence becomes zero.
It is a known fact that angle of incidence and the angle of refraction are related to each other and are governed by Snell's Law i.e
This explains why the angle of refraction is zero when the incident light falls normal or perpendicular to the glass slab.
Answered by Abhijeet Mishra | 17th Jun, 2017, 01:56: PM
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