A ray of light passes from vaccume into a medium of refractive index n. if the angle of incidence is twice the angle of refracti

A ray of light passes from vaccume into a medium of refractive index n. if the angle of incidence is twice the angle of refraction, then the angle of incidence is
A. `cos^(-1)(n//2)`
B. `sin^(-1)(n//2)`
C. `2 cos^(-1)(n//2)`
D. `2sin^(-1)(n//2)`

A ray of light passes from vaccume into a medium of refractive index n. if the angle of incidence is twice the angle of refraction, then the angle of

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