A beam of light travelling in water is incident on a glass which is immersed in the water. The incident beam makes an angle of ${40}^o$ with the normal. Calculate the angle of refraction in the glass.

[Refractive index of water = 1.33, Refractive index of glass = 1.5]

A. ${29.36}^o$
B. ${25.37}^o$
C. ${37.21}^o$
D. ${34.75}^o$  

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Correct Answer: D