The period of a 10 kHz radio wave traveling at 10\(^{8}\) ms\(^{-1}\) is--
PHYSICS
WAEC 2022
The period of a 10 kHz radio wave traveling at 10\(^{8}\) ms\(^{-1}\) is--
- A. 3.0 x 10\(^{-5}\)s
- B. 1.0 x 10\(^{-4}\) s
- C. 1.0 x 10\(^{4}\)s
- D. 3.0 x 10\(^{4}\)s
Correct Answer: B. 1.0 x 10\(^{-4}\) s
Explanation
The relation between period and frequency isthat one is the inverse of the other.
By definition:
Frequency = 1/period.
or
period = 1/frequency → 1/ 10,000
period = 0.0001 or 1.0 x 10\(^{-4}\) s
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