The refractive index of glass is 1.5 and that of water is 1.3, the speed of light in water is 2.25 × 108 m/s. What is the speed of light in glass?

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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<sup>8</sup> m/s. What is the speed of light in glass?