1.

Refractive index of glass is \[\frac{3}{2}\] and refractive index of water is \[\frac{4}{3}\]. If the speed of light in glass is \[2.00\times {{10}^{8}}\] m/s, the speed in water will be                               [MP PMT 1994; RPMT 1997]

A.            \[2.67\times {{10}^{8}}\] m/s                                           
B.            \[2.25\times {{10}^{8}}\] m/s
C.            \[1.78\times {{10}^{8}}\] m/s                                           
D.            \[1.50\times {{10}^{8}}\] m/s
Answer» C.            \[1.78\times {{10}^{8}}\] m/s                                           


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