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TOTAL INTERNAL REFLECTION 
When light travels from a denser 
medium to a rarer medium, if the 
angle of incidence is greater than 
the critical angle the ray return to 
the denser medium. This is 
known as total internal reflection
1<c 1=c 1>c
1. Light should travel from denser medium to rarer 
medium 
2. Angle of incidence in the denser medium should be 
greater than the critical angle(1>c)
n1 
n2
1.Brilliance of diamond
2.mirage
3.Total reflection prisms
4.Rainbow
5.Opical fiber
1.Optical fiber communication 
2.Prism used in binoculars for producing erect 
images 
3.Endoscopy 
4.Jewellary purpose
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