Light travels in two media A and B with speeds \(2 \times 10^8\text{ m/s}\) and \(2.4 \times 10^8\text{ m/s}\) respectively. The critical angle of these two media is

28.2°

28.2°

0%

40°

40°

0%

48.1°

48.1°

0%

56.2°

56.2°

100%