The ionosphere acts as a reflector for which | vedclass

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(B) The ionosphere is a region of the upper atmosphere that contains a high concentration of ions and free electrons. Radio waves in the frequency ran

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$3-30 MHz$

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(B) The ionosphere is a region of the upper atmosphere that contains a high concentration of ions and free electrons. Radio waves in the frequency range of $3-30 MHz$ (known as High Frequency or $HF$ waves) are reflected by the ionosphere back to the Earth's surface. This phenomenon allows for long-distance communication,often referred to as sky wave propagation. Frequencies lower than this range may be absorbed,while frequencies higher than this range (such as $VHF$,$UHF$,and $Microwaves$) typically pass through the ionosphere into space.

The ionosphere acts as a reflector for which frequency range?

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