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Monday, 17 August 2026
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Physics Past Questions and Answers

Topic: Waves

Jamb Physics Questions - Waves

Question 41:
The fig above shows two waveforms X and Y. If the frequency of X is 30Hz what is the frequency of Y
  • A 12Hz
  • B 19Hz
  • C 60Hz
  • D 75Hz
View Answer & Explanation
Question 42:
A vibrator of frequency 60Hz is used in generating transverse stationary waves in a long thin wire, If the average distance between successive nodes on the wire is 45cm, find the speed of the transverse waves in the wire.
  • A 27ms<sup style='font-size: smaller;'>-1</sup>
  • B 54ms<sup style='font-size: smaller;'>-1</sup>
  • C 90ms<sup style='font-size: smaller;'>-1</sup>
  • D 108ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 43:
In a sound wave in air, the adjacent rarefactions and compressions are separated by a distance of 17cm. If the velocity of the sound wave is 340ms-1. Determine the frequency
  • A 10Hz
  • B 20Hz
  • C 1000Hz
  • D 5780Hz
View Answer & Explanation
Question 44:
Which of the following pairs is NOT part of the electromagnetic spectrum? i. Radio waves. ii. Beta rays. iii. Gamma rays. iv. Alpha rays
  • A I and ii
  • B Iii and iv
  • C I and ii
  • D Ii and iv
View Answer & Explanation
Question 45:
A light wave of frequency 5 x 1014Hz moves through water which has a refractive index of \(\frac{4}{3}\). Calculate the wavelength in water if the velocity of light in air is 3 x 108ms-1
  • A 4.5 x 10<sup style='font-size: smaller;'>-7</sup>m
  • B 6.0 x 10<sup style='font-size: smaller;'>-7</sup>m
  • C 1.7 x 10<sup style='font-size: smaller;'>6</sup>m
  • D 2.2 x 10<sup style='font-size: smaller;'>6</sup>m
View Answer & Explanation