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Speed of light will be minimum in which of the following mediums?
- a)Water
- b)Kerosene
- c)Flint glass
- d)Diamond
- e)None of the above/More than one of the above
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
Speed of light will be minimum in which of the following mediums?a)Wa...
- Speed of light is inversely proportional to refractive index.
- The ratio of the speed of light in a vacuum to the speed of light in a medium is called the refractive index of that medium.
- It is also called as absolute refractive index.
- The vacuum has a refractive index of 1.
- The refractive index of water is 1.333.
- The refractive index of kerosene is 1.44.
- The refractive index of flint glass is 1.65.
- The refractive index of diamond is 2.42.
- Hence Speed of light is minimum in Diamond.
- The change in the speed of light when it passes through a diamond is
- ⇒ Δs = (1.24 - 3) × 108 = -1.76 × 108 m/s
- The speed of light when passing through a diamond decreases by 59%.
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Speed of light will be minimum in which of the following mediums?a)Wa...
Understanding the Speed of Light in Different Mediums
The speed of light varies in different materials due to their optical densities. The denser the medium, the slower light travels through it. Here's a breakdown of the mediums listed in the question:
1. Speed of Light in Water
- Light travels slower in water than in air, but faster than in many other mediums.
- The refractive index of water is approximately 1.33, indicating a moderate slowing of light.
2. Speed of Light in Kerosene
- Kerosene has a refractive index around 1.44, which means light slows down more than in water, but not as much as in denser solids.
3. Speed of Light in Flint Glass
- Flint glass has a higher refractive index (around 1.6 to 1.9), causing light to slow down considerably.
- This medium is commonly used in optics for lenses.
4. Speed of Light in Diamond
- Diamond has one of the highest refractive indices (approximately 2.42), resulting in a significant reduction in the speed of light.
- It is the densest medium listed, which explains the very low speed of light within it.
Conclusion: Correct Answer
- The correct answer is option 'D' because both flint glass and diamond have high refractive indices, making them capable of slowing light down considerably compared to water and kerosene.
- Therefore, light travels the slowest in both flint glass and diamond, confirming that more than one medium can exhibit the minimum speed of light.
The speed of light varies in different materials due to their optical densities. The denser the medium, the slower light travels through it. Here's a breakdown of the mediums listed in the question:
1. Speed of Light in Water
- Light travels slower in water than in air, but faster than in many other mediums.
- The refractive index of water is approximately 1.33, indicating a moderate slowing of light.
2. Speed of Light in Kerosene
- Kerosene has a refractive index around 1.44, which means light slows down more than in water, but not as much as in denser solids.
3. Speed of Light in Flint Glass
- Flint glass has a higher refractive index (around 1.6 to 1.9), causing light to slow down considerably.
- This medium is commonly used in optics for lenses.
4. Speed of Light in Diamond
- Diamond has one of the highest refractive indices (approximately 2.42), resulting in a significant reduction in the speed of light.
- It is the densest medium listed, which explains the very low speed of light within it.
Conclusion: Correct Answer
- The correct answer is option 'D' because both flint glass and diamond have high refractive indices, making them capable of slowing light down considerably compared to water and kerosene.
- Therefore, light travels the slowest in both flint glass and diamond, confirming that more than one medium can exhibit the minimum speed of light.
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Speed of light will be minimum in which of the following mediums?a)Waterb)Kerosenec)Flint glassd)Diamonde)None of the above/More than one of the aboveCorrect answer is option 'D'. Can you explain this answer?
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