Question

The critical angle for water, which has a refractive index of 1.33, is:

Options

• \[24.41^\circ\]

• \[48.75^\circ\]

• \[37.31^\circ\]

• \[41.14^\circ\]

Answer 1

Water has a refractive index of 1.33, and its critical angle is \[48.75^\circ\]. This is the largest critical angle among the common substances listed, consistent with its lowest refractive index.