The angle of incidence is found to be twice the angle of refraction when a ray of light passes from vacuum into a medium of refractive index $\mu$. The angle of incidence will be
- A$\cos^{-1}\left(\frac{\mu}{2}\right)$
- B$2 \cos^{-1}\left(\frac{\mu}{2}\right)$
- C$\sin^{-1}\left(\frac{\mu}{2}\right)$
- D$2 \sin^{-1}\left(\frac{\mu}{2}\right)$
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DifficultKVPY 2009
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