​The refractive indices of mediums 1,2 and 3 are 1.46,1.65 and 1.31, respectively. If the speed of light in the mediums are v_1,v_2 and v_3, respectively, which of the following relations between them is correct?

n₂ = 1.65,  the speed v₂ will be the  lowest.

n₃ = 1.31, the speed v₃ will be the highest.

Solution: 
nv = c  Where n is refrective index,v is speed of light in that medium, c is speed of light in vaccum.

So, the relation between the speed of light is: