The refractive index of glass is 1.5 and that of water is 1.3, the speed of light in water is \(2.25×10^8 \; m/s. \) What is the speed of light in glass?
\( 3.95×10^8 \; m/s\)
\( 1.95×10^8 \ m/s\)
\( 9.95×10^8\; m/s\)
\( 7.95×10^8 m/s\)
