Question

The ionosphere

• A. reflects back radiowaves in the AM band
• B. reflects back radiowaves in the FM band
• C. absorbs radiowaves in the AM band
• D. absorbs radiowaves in the FM band

Answer 1

The correct option is A reflects back radiowaves in the AM band

Ionization of the upper parts of the earth's atmosphere plays a part in the propagation of radio waves, particularly at high frequencies.

And reflection occurs from ionization layers due to the bending of waves when it travels through different layers.

So, the ionosphere reflects back radio waves in the AM band which are at low frequencies