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Sunday, 16 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 1:
A herdsman yelling out to fellow herdsman heard his voice reflected by cliff 4s later. What is the velocity of sound in air if the cliff is 680m away?
  • A 170ms<sup style='font-size: smaller;'>-1</sup>
  • B 136ms<sup style='font-size: smaller;'>-1</sup>
  • C 340ms<sup style='font-size: smaller;'>-1</sup>
  • D 680ms<sup style='font-size: smaller;'>-1</sup>
  • E 510ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 2:
A man stands one-third of the way between two walls and claps his hands, He hears two distinct echoes 1s apart. If the speed of sound is 330ms-1 the distance between the wall is
  • A 33m
  • B 110m
  • C 220m
  • D 330m
  • E 495m
View Answer & Explanation
Question 3:
In order to find the depth of the sea, a ship sends out a sound wave and receives an echo after one second. If the velocity of sound in water is 1500ms-1, what is the depth of the sea?
  • A 0.75km
  • B 1.50km
  • C 2.20km
  • D 3.00km
  • E 3.75km
View Answer & Explanation
Question 4:
A man clapping his hands at regular intervals observes that the echo of a clap coincides with the next clap. If the reflecting cliff is 160m away and the speed of sound is 320ms-1, what is the frequency of the clapping?
  • A 1 Hz
  • B 2Hz
  • C 4Hz
  • D 8Hz
View Answer & Explanation
Question 5:
A wave has a frequency of 2Hz and a wavelength of 30cm. The velocity of the wave is
  • A 60.0ms<sup style='font-size: smaller;'>-1</sup>
  • B 6.0ms<sup style='font-size: smaller;'>-1</sup>
  • C 1.5ms<sup style='font-size: smaller;'>-1</sup>
  • D 0.6ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation