this is a year 9 question please help a girl dives into sea. the sea water has a density of 1200kg, m (cubed). what is the increase in pressure as she dives from the surface of the sea to 4m below?

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.