science
Grade-7
Easy
Question
Which of the following cannot be a value of the refractive index of a material?
- 0
- 1
- 2
- 3
Hint:
The refractive index of water is minimum.
The correct answer is: 0
The correct answer is a)0. The refractive index of air is 1 which is the minimum possible.
Refractive index is the ratio of speed of light in vacuum and speed of light in other medium. As the speed of light is fastest in vacuum the value of refractive index for other mediums can not be less than 1.
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