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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Waves from stretched strings

Jamb Physics Questions - Waves from stretched strings

Question 6:
If the load at the end of a sonometer wire is immersed in a bucket of water, the original fundamental frequency of the wire could be restored by
  • A Decrease the length of the wire
  • B Increasing the length of the wire
  • C Increasing the mass per unit length of the wire
  • D Changing the temperature of the wire
View Answer & Explanation
Question 7:
A steel wire of length 0.50m is stretched between two fixed points and its fundamental frequency is 200Hz. The speed of the wave in the wire is
  • A 100ms<sup style='font-size: smaller;'>-1</sup>
  • B 120ms<sup style='font-size: smaller;'>-1</sup>
  • C 200ms<sup style='font-size: smaller;'>-1</sup>
  • D 250ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 8:
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 & Explanation
Question 9:
If tension is maintained on a stretched string of length 0.6m, such that its fundamental frequency of 220Hz is excited, determine the velocity of the transverse wave in the string.
  • A 528 ms<sup style='font-size: smaller;'>-1</sup>
  • B 264 ms<sup style='font-size: smaller;'>-1</sup>
  • C 132 ms<sup style='font-size: smaller;'>-1</sup>
  • D 66 ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 10:
The electromagnetic wave that can produce a heating effect on the environment is
  • A X -rays
  • B Ultraviolet rays
  • C Infrared rays
  • D Gamma rays
View Answer & Explanation