Question

Drashti was performing an experiment on refractive index in Physics Lab. She collected the following data: Medium 1 2 3 4 5 Refractive Index 1.33 1.52 1.54 1.71 2.42 She was supposed to use the above data to find the answers of the following questions but she has little confusion. Can you help her with the following answers: Specify a medium pair so that light speeds up when it goes from one of these medium to another. Specify a medium pair so that light slows down when it goes from one of these medium to another. In which of the above media the speed of light is maximum? What will happen to the light ray if a light ray is passing from medium 4 to medium 2 and the angle of incidence is more than its critical angle?

Answer 1

Answer:

1) The light will speed up when going from medium of refractive index 2.42 to 1.33.

2) The light will slow down when going from medium of refractive index 1.33 to 2.44.

3) The speed of light is maximum in the media of refractive index 1.33.

4) The light will bend away from the normal when passing from medium 4 to medium 2 if the angle of incidence is more than the critical angle.

Explanation:

The speed of light decreases when it goes from a medium of low refractive index to a medium of high refractive index.