Material I has critical angle iA and material B has critical angle $$iB(iB$$$$iA)$$ Then which of the following is $$true(i)$$ Light can be totally internally reflected when it passes from,B to $$A(ii)$$ Light can be totally internally reflected when it passes from A to $$B(iii)$$ Critical angle for total internal reflection is $$iB-iA(iv)$$ Critical angle between A and B is $$sin$$−$$1sin$$ iAsin iB

Question

Material I has critical angle iA and material B has critical angle $$iB(iB$$>$$iA)$$ Then which of the following is $$true(i)$$ Light can be totally internally reflected when it passes from,B to $$A(ii)$$ Light can be totally internally reflected when it passes from A to $$B(iii)$$ Critical angle for total internal reflection is $$iB-iA(iv)$$ Critical angle between A and B is $$sin$$−$$1sin$$ iAsin iB

Infinity Learn · Accepted Answer

We know $$C=$$$$sin$$−$$11$$μGiven critical angle iB>iASo μB<μA i.e., B is rare and A is denser.Hence light can be totally internally reflected when it passes from A to,BNow critical angle for, A to B

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