Which pair of medium has higher critical angle. Air-water or air-glass? Refractive indexes for water and glass are 1.33 and 1.5 respectively?

Explanation

`""_(r) n _(d) = ( sin 90^(@))/( sin C)`
`implies C = sin ^(-1) ((n _(r))/( n _(d)))`
Since `n _(w) gt n _(G)` so crtical angle for air-water pair is less than critical angle for air-glass pair.