The speed of light in medium A is `2.0xx10^8m//sec` and that in medium B is `2.4xx10^8m//sec`. The critical angle of incidence for light tending to go from medium A to medium B isA. `sin^-1.(5)/(12)`B. `sin^-1.(5)/(6)`C. `sin^(-1).(2)/(3)`D. `sin^(-1).(3)/(4)`

The speed of light in medium A is `2.0xx10^8m//sec` and that in medium

1.	The speed of light in medium A is `2.0xx10^8m//sec` and that in medium B is `2.4xx10^8m//sec`. The critical angle of incidence for light tending to go from medium A to medium B isA. `sin^-1.(5)/(12)`B. `sin^-1.(5)/(6)`C. `sin^(-1).(2)/(3)`D. `sin^(-1).(3)/(4)`
Answer» Correct Answer - B `mu_Asini=mu_Bsinr` `mu_AsinC=mu_Bsin90^@` `(sinC)/(v_A)=1/v_B` (Since `muprop1/v`) `sinC=v_A/v_B=(2)/(2.4)=5/6impliesC=sin^-1(5/6)`

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The speed of light in medium A is `2.0xx10^8m//sec` and that in medium B is `2.4xx10^8m//sec`. The critical angle of incidence for light tending to go from medium A to medium B isA. `sin^-1.(5)/(12)`B. `sin^-1.(5)/(6)`C. `sin^(-1).(2)/(3)`D. `sin^(-1).(3)/(4)`

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