A glass prism of refractive index 1.5 is immersed in water (refractive index 4/3). A light beam incident normally on the face AB

A glass prism of refractive index 1.5 is immersed in water (refractive index 4/3). A light beam incident normally on the face AB is totally reflected to reach on the face BC if.

A. `sin theta ge 8/9`
B. `sin theta ge 2/3`
C. `sin theta =(sqrt(3))/2`
D. `2/3 lt sin theta lt 8/9`

A glass prism of refractive index 1.5 is immersed in water (refractive index 4/3). A light beam incident normally on the face AB is totally reflected

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