Question

plz answer this question ​

Answer 1

Explanation:

The frequency (f) of a wave is the number of full wave forms generated per second. This is the same as the number of repetitions per second or the number of oscillations per second.  

Time Period (T) is the number of seconds per waveform, or the number of seconds per oscillation.  It is clear that frequency and period are reciprocals.

Now,

Time taken in one complete cycle is 2 μ s.

t = 2 μs = 2 * 10⁻⁶ s {∴ 1 μs = 10⁻⁶ s}

Then,

Frequency = 1/T

                  = 5 * 10⁵ Hz

Hope it helps!