Question:
The layer of the atmosphere that efficiently reflects high frequency waves particularly at night is:
The layer of the atmosphere that efficiently reflects high frequency waves particularly at night is:
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The ionosphere is responsible for reflection of radio waves and is located mainly in the thermosphere region of the atmosphere.
Updated On: Jun 18, 2026
- Mesosphere
- Troposphere
- Stratosphere
- Thermosphere
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The Correct Option is D
Solution and Explanation
Concept:
Radio communication over long distances uses reflection of radio waves from the ionosphere.
The ionosphere lies mainly within the thermosphere.
Step 1: Identify the atmospheric layer containing the ionosphere.
The ionized region of the atmosphere is located in the \[ \text{Thermosphere}. \]
Step 2: Understand night-time reflection.
At night, recombination decreases in some layers and high-frequency radio waves are efficiently reflected by ionized regions. This makes long-distance radio communication possible.
Step 3: Choose the correct layer.
Therefore, \[ \boxed{\text{Thermosphere}} \]
Step 1: Identify the atmospheric layer containing the ionosphere.
The ionized region of the atmosphere is located in the \[ \text{Thermosphere}. \]
Step 2: Understand night-time reflection.
At night, recombination decreases in some layers and high-frequency radio waves are efficiently reflected by ionized regions. This makes long-distance radio communication possible.
Step 3: Choose the correct layer.
Therefore, \[ \boxed{\text{Thermosphere}} \]
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