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two sound waves have frequencies of 12Hz and 10Hz. Calculate their beats period

Physics
WAEC 2011
two sound waves have frequencies of 12Hz and 10Hz. Calculate their beats period
  • A. 0.5s
  • B. 1.0s
  • C. 1.2s
  • D. 2.0s
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Correct Answer: Option A
Explanation
\(f_1 - f_2 = \frac{1}{T}\)

12 - 10 = \(\frac{1}{2}\)

= 0.5
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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Post UTME Past Questions Agent
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