Question

Which of the followings is not correct for the definition of refractive index of a medium? *
(1)It is ratio of real depth to the apparent depth of an object in the medium
(2)It is the ratio of speed of light in air to the speed of light in the medium
(3)It is the ratio of Sine angle of incidence to the Sine angle of reflection
(4)It is the ratio of Sine angle of incidence to the Sine angle of refraction​

Answer 1

Answer:

1. I is incorrect ....plz mark brainliest and complete my aim of expert