What is the formulae for calculating critical angle
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Θcrit= sine-1 (nr/ni) = invsine (nr/ni)
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look when the ray if light moves from denser to rarer if it graces along the surface at 90 degrees ie angle of incidence is equal to angle of criticle
rarer
u
denser =sin90/sinc=u=i/sinc
c=1/sinc×∪
thank u
generally ∪=refractive index
rarer
u
denser =sin90/sinc=u=i/sinc
c=1/sinc×∪
thank u
generally ∪=refractive index
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