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Monday, 17 August 2026
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Physics Past Questions and Answers

Topic: Relationship between frequency, wavelength and wave velocity

Jamb Physics Questions - Relationship between frequency, wavelength and wave velocity

Question 11:
A cannon is fired from town X,after how long is the sound heard at a town Y 4.95 km away?
[velocity of sound in the air = 330 ms-1]
  • A 30 s
  • B 10 s
  • C 10 s
  • D 15 s
View Answer & Explanation
Question 12:
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 & Explanation
Question 13:
What is the velocity of sound at 100 oC if the velocity of sound at 0 oC is 340ms -1?
  • A 497m<sup style='font-size: smaller;'>-1</sup>
  • B 440m<sup style='font-size: smaller;'>-1</sup>
  • C 397m<sup style='font-size: smaller;'>-1</sup>
  • D 240m<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 14:
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 & Explanation
Question 15:
A source of sound produces waves in air of wavelength 1.65m. If the speed of sound in air is 330ms\(^{-1}\), the period of vibration in air is?
  • A 200
  • B 0.005
  • C 0.5
  • D 0.02
View Answer & Explanation