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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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16

If a sound wave goes from a cold air region to a hot air region, its wavelength will?

  • A. increase
  • B. decrease
  • C. decrease then increase
  • D. remain constant
View Answer & Discuss (5) JAMB 2021
17

The lowest note emitted by a stretched string has a frequency of 40Hz. How many overtones are there between 40Hz and 180Hz?

  • A. 4
  • B. 3
  • C. 2
  • D. 1
View Answer & Discuss (3) JAMB 2021
18

The periodic rise and fall in the intensity of sound produced whn two notes of nearly equal frequencies are sounded together is called?

  • A. doppler effect
  • B. beat
  • C. interference
  • D. resonance
View Answer & Discuss (2) WAEC 2022
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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
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208