[" The velocity of light in glass whose refractive index with respect to air is "1.5" is "2times10^(8)" misec- "],[" In certain liquid,the velocity of light is found to be "2.5times10^(8)m/sec" .The refractive index of the "],[" liquid with respect to air is: "],[[" (a) "0.64," (b) "0.80," (c) "1.20," (d) "1.44]]