which of the following frenquencies falls in the range of RF waves used by commercial radio broadcasting stations

You didn't list any frequencies.

To determine which of the given frequencies falls in the range of RF waves used by commercial radio broadcasting stations, we first need to understand the frequency range typically used by such stations.

Commercial radio broadcasting stations generally transmit radio signals in the RF (Radio Frequency) range. This range typically encompasses frequencies between 30 kHz and 300 MHz.

Now, let's check which of the given frequencies falls within this range:

A. 10 kHz - This frequency is below the RF range, so it does not fall within the range used by commercial radio broadcasting stations.

B. 60 Hz - This frequency is even lower than 10 kHz and is associated with the electricity grid's frequency. It is not within the RF range.

C. 1 GHz - This frequency is much higher than the RF range. It is in the Gigahertz (GHz) range, which is significantly beyond the usual range used by commercial radio broadcasting stations.

D. 100 MHz - This frequency falls within the RF range of 30 kHz to 300 MHz. It is a suitable frequency used by commercial radio broadcasting stations.

Based on the above analysis, the frequency that falls in the range used by commercial radio broadcasting stations is option D: 100 MHz.