Question

the air layer of atmosphere whose temperature is less than the hot layer behave as optically ​

Answer 1

Answer:

The air layer of atmosphere whose temperature is less than the hot layer behaves as optically denser medium.

Explanation:

• The temperature in the atmosphere varies depending upon the amount of sunlight received by various layers.
• The cold air layer (less hot layer) of the atmosphere will be an optically denser medium than hot air since the molecules are tightly packed.
• When air receives more sunlight, it expands as a result of which the volume increases and the density decreases.
• But cold air does not expand, and therefore its density is higher than hot air.
• Therefore, the cooler layer (less hot layer) of the atmosphere behaves as an optically denser medium for the light rays.
• The hotter air layers behave as an optically rarer medium.
• Thus, light gets refracted when passing from one layer to the other.

Answer 2

Answer:

The air layer of the atmosphere whose temperature appears less than the hot layer behaves as an optically ​denser medium.

Explanation:

• The amount of sunlight that different layers of the atmosphere receive influences the temperature in the atmosphere.
• Since the molecules in cold air are more closely packed than those in hot air, the latter will be an optically denser medium than the former.
• More sunshine causes air to expand, which results in an increase in volume and a decrease in density.
• However, because cold air does not expand, it has a higher density than hot air.
• As a result, the atmosphere's cooler layer—the layer that is less hot—behaves as an optically denser medium for the light rays.  Layers of hotter air have an optically rarer behaviour.

Thus, the air layer of the atmosphere whose temperature appears less than the hot layer behaves as an optically ​denser medium.

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