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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
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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Correct Answer: Option B
Explanation

The relation between period and frequency is that 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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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995