The absolute refractive indices of water, alcohol, diamond and glass are 1.33, 1.36, 2.42 and 1.5 respectively. When light enters from air into all these four media, degree of bending will be maximum in
(A) Water
(B) Alcohol
(C) Diamond
(D) Glass
Answers
Answer:
(B) Water
Explanation:
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.
Answer:
- (c) Diamond is the required answer .
Explanation:
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀According to the Question
It is given that
- The absolute refractive indices of water, alcohol, diamond and glass are 1.33, 1.36, 2.42 and 1.5 .
As we know that Absolute Refractive Index is calculated by Speed of light in vacuum divided by Speed of light in that Particular medium .
Also we know that Absolute Refractive Index is inversely proportional to speed of light in medium .
It means that if the speed of light in given medium is greater then the absolute refractive index is lesser and vice versa .
Also, Bending of light is directly proportional to Absolute Refractive Index .
It means that if any media has higher refractive index then , it has maximum degree of bending of light .
So from the given Absolute Refractive Indices of different media , we can clearly see that Diamond has highest Refractive Index . So, in diamond degree of bending will be high.
- So, the required option is (c) Diamond .