Select the correct answer.

Question

If the frequency of a FM wave is 8.85 × 107 hertz, what is the period of the FM wave?

A.
2.58 × 10–8 seconds
B.
1.13 × 10–8 seconds
C.
1.25 × 10–7 seconds
D.
5.82 × 10–7 seconds

Answer 1

To find the period (T) of a wave from its frequency (f), you can use the formula:

\[ T = \frac{1}{f} \]

Given the frequency \( f = 8.85 \times 10^7 \) hertz, we can calculate the period:

\[ T = \frac{1}{8.85 \times 10^7} \]

Calculating this gives:

\[ T = 1.13 \times 10^{-8} \text{ seconds} \]

So, the correct answer is:

B. 1.13 × 10–8 seconds