The refractive index of diamond is $2.42$. What is the meaning of this statement?
(N/A) The refractive index of a medium $n_m$ is related to the speed of light in that medium $v$ by the relation:
$n_m = \frac{\text{Speed of light in air}}{\text{Speed of light in the medium}} = \frac{c}{v}$
Where,$c$ is the speed of light in vacuum or air.
The refractive index of diamond is $2.42$. This suggests that the speed of light in diamond is reduced by a factor of $2.42$ compared to its speed in air.
$n_m = \frac{\text{Speed of light in air}}{\text{Speed of light in the medium}} = \frac{c}{v}$
Where,$c$ is the speed of light in vacuum or air.
The refractive index of diamond is $2.42$. This suggests that the speed of light in diamond is reduced by a factor of $2.42$ compared to its speed in air.
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Similar Questions
Find out,from the table,the medium having the highest optical density. Also,find the medium with the lowest optical density.
Material medium Refractive index Air $1.0003$ Ice $1.31$ Water $1.33$ Alcohol $1.36$ Kerosene $1.44$ Fused quartz $1.46$ Turpentine oil $1.47$ Benzene $1.50$ Crown glass $1.52$ Canada Balsam $1.53$ Rock salt $1.54$ Carbon disulphide $1.63$ Dense flint glass $1.65$ Ruby $1.71$ Sapphire $1.77$ Diamond $2.42$
| Material medium | Refractive index |
| Air | $1.0003$ |
| Ice | $1.31$ |
| Water | $1.33$ |
| Alcohol | $1.36$ |
| Kerosene | $1.44$ |
| Fused quartz | $1.46$ |
| Turpentine oil | $1.47$ |
| Benzene | $1.50$ |
| Crown glass | $1.52$ |
| Canada Balsam | $1.53$ |
| Rock salt | $1.54$ |
| Carbon disulphide | $1.63$ |
| Dense flint glass | $1.65$ |
| Ruby | $1.71$ |
| Sapphire | $1.77$ |
| Diamond | $2.42$ |
Medium
View SolutionAn object $5.0\, cm$ in length is placed at a distance of $20\, cm$ in front of a convex mirror of radius of curvature $30\, cm$. Find the position of the image,its nature and size.
Difficult
View SolutionWhere should an object be placed in front of a convex lens to get a real image of the size of the object?
Easy
View SolutionThe radius of curvature of a spherical mirror is $20\, cm$. What is its focal length (in $cm$)?
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View SolutionName the type of mirror used in the following situation.
Support your answer with a reason.
$(a)$ Headlights of a car
Support your answer with a reason.
$(a)$ Headlights of a car
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