JAMB - Physics (2009 - No. 24)
When light passes through two media x and y of refraction indices 1.51 and 1.33 respectively, the speed of light in
x is same as in y
x and y is same as in vacuum
x is higher than in y
y is higher than in x
Paliwanag
Since 1.51, the refractive index of X is greater than 1.33, the refractive index of y, the speed of light in y is higher than that in X