The speed of light in two media 1 and 2 are 2.2*10^8 m/s and 2.4*10^8 m/s respectively.the critical angle for light refracting from 1 to 2 medium will be
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From your question,we get that the refractive index is=(2.2*10^8)/(2.4*10^8)=0.917.
so, if Theta is the critical angle,then,
sinTheta=1/0.917
or,Theta=66.49
so, if Theta is the critical angle,then,
sinTheta=1/0.917
or,Theta=66.49
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