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The air layer of atmosphere whose temperature is less than the hot layer behave as optically
- a)denser medium
- b)rarer medium
- c)inactive medium
- d)either denser or rarer medium
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The air layer of atmosphere whose temperature is less than the hot lay...
The cold air layer of the atmosphere acts as a optically denser medium than hot air because the molecules are closely packed together.
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The air layer of atmosphere whose temperature is less than the hot lay...
The behaviour of the air layer of the atmosphere depends on its temperature with respect to the hot layer. The correct answer is option 'A' which means that the cooler layer behaves as an optically denser medium.
Explanation:
Optical density is the measure of the degree to which a material slows down the velocity of light passing through it. The denser the medium, the more it slows down the light passing through it. In the atmosphere, the density of air decreases with increasing altitude. Therefore, the air near the ground is denser than the air at higher altitudes.
When a light ray passes through a medium of different density, it bends or gets refracted. The amount of refraction depends on the difference in the densities of the two media. If the cooler layer of air has a higher density than the hot layer, then it behaves as an optically denser medium. This means that light rays passing from the hot layer to the cooler layer will bend towards the normal (perpendicular to the surface) and slow down.
In contrast, if the cooler layer of air has a lower density than the hot layer, then it behaves as an optically rarer medium. This means that light rays passing from the hot layer to the cooler layer will bend away from the normal and speed up.
Therefore, the correct answer is option 'A' as the cooler layer of air behaves as an optically denser medium.
Explanation:
Optical density is the measure of the degree to which a material slows down the velocity of light passing through it. The denser the medium, the more it slows down the light passing through it. In the atmosphere, the density of air decreases with increasing altitude. Therefore, the air near the ground is denser than the air at higher altitudes.
When a light ray passes through a medium of different density, it bends or gets refracted. The amount of refraction depends on the difference in the densities of the two media. If the cooler layer of air has a higher density than the hot layer, then it behaves as an optically denser medium. This means that light rays passing from the hot layer to the cooler layer will bend towards the normal (perpendicular to the surface) and slow down.
In contrast, if the cooler layer of air has a lower density than the hot layer, then it behaves as an optically rarer medium. This means that light rays passing from the hot layer to the cooler layer will bend away from the normal and speed up.
Therefore, the correct answer is option 'A' as the cooler layer of air behaves as an optically denser medium.
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