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Monday, 17 August 2026
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Physics Past Questions and Answers

Topic: Waves

Jamb Physics Questions - Waves

Question 21:
which of the following is NOT correct? i. the pitch of a sound note depends on the frequency of vibrations. ii. the intensity of a sound note is proportional to the amplitude of vibrations. iii. beats are produced by two sources of sound because one wave is travelling faster than the other. iv. when two sources of sound of frequencies 500Hz and 502Hz are sounded together, a beat frequency of 2Hz is observed. v. the first harmonic of a tone have double the frequency of the fundamental note.
  • A I and ii
  • B Ii and iii
  • C I and iii
  • D Iii and iv
  • E Iv and v
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Question 22:
Ripples on water are similar to light waves in that they both
  • A Have the same wavelength
  • B Are longitudinal
  • C Cannot be reflected
  • D Travel at the same speed
  • E Can be refracted and diffracted
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Question 23:
Longitudinal waves do not exhibit
  • A Refraction
  • B Reflection
  • C Diffraction
  • D Polarization
  • E Rarefaction
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Question 24:
Radio waves have a velocity of 3 x 108ms-1. A radio station sends out a broadcast on a frequency of 800kHz. The wavelength of the broadcast is
  • A 375.0m
  • B 267.0m
  • C 240.0m
  • D 37.5m
  • E 26.7m
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Question 25:
Water shows anomalous behaviour.
  • A Below 0<sup style='font-size: smaller;'>o</sup>C
  • B Between 0<sup style='font-size: smaller;'>oC and 4o</sup>C
  • C At exactly 4<sup style='font-size: smaller;'>oC</sup>
  • D Between 4<sup style='font-size: smaller;'>oC and 100oC</sup>
  • E Above 100<sup style='font-size: smaller;'>oC</sup>
View Answer & Explanation