A ray of light starting from air passes through medium A of refractive index 1.50, enters medium B of refractive index 1.33 and finally enters medium C of refractive index 2.42. If this ray emerges out in air fron. C, then for which of the following pairs of media the bending of light is least?
(a) air-A
(b) A-B
(c) B-C
(d) C-air
Answers
Answer:
The cause of refraction is a change in light speed; and wherever the light speed changes most, the refraction is greatest. The speed is related to the optical density of a material that is related to the index of refraction of a material. Air is the least dense material (lowest index of refraction value) and water is the denser material (largest index of refraction value). Thus, it would be reasonable that the most refraction occurs for the transmission of light across an air-water boundary.
Refractive index is the the ratio of the velocity of light in a vacuum to its velocity in a specified medium.
Here, the refractive index will be more for a more denser medium as the speed of light through a denser medium will be lesser.
Hence, the speed of light is maximum in the B.
Answer:
The cause of refraction is a change in light speed; and wherever the light speed changes most, the refraction is greatest. The speed is related to the optical density of a material that is related to the index of refraction of a material. Air is the least dense material (lowest index of refraction value) and water is the denser material (largest index of refraction value). Thus, it would be reasonable that the most refraction occurs for the transmission of light across an air-water boundary.
Refractive index is the the ratio of the velocity of light in a vacuum to its velocity in a specified medium.
Here, the refractive index will be more for a more denser medium as the speed of light through a denser medium will be lesser.
Hence, the speed of light is maximum
plz mark me as brainlist