Will mark as brainliest!! Please help The price of water is $1.00 at a quantity of 1000, then prices rise to $1.50 and quantity changes to 850. What is the revenue for the good? What is the water’s elasticity? How do you know? What type of product is it? ( P X Q = TR)

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.