velocity of light in a liquid is 1.5x108m/s and in air it is 3x108m/s. if a ray of light passes from liquid into the air , calculate the value of critical angle?
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sini/sinr= n2/n1=v1/v2
= 1.5*10^8/3*10^8 =1/2
sinc= n2/n1
c= 30
= 1.5*10^8/3*10^8 =1/2
sinc= n2/n1
c= 30
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