Odpowiedź :
[tex]f = 4 MHz = 4 * 10^{6} Hz\\\\T = \frac{1}{f} = \frac{1}{4 * 10^{6}} = 0,25 * 10^{-6} s = 0,25 * 10^{-3} ms = 250 ms[/tex]
[tex]f = 4 MHz = 4 * 10^{6} Hz\\\\T = \frac{1}{f} = \frac{1}{4 * 10^{6}} = 0,25 * 10^{-6} s = 0,25 * 10^{-3} ms = 250 ms[/tex]