Search SchoolNGR

Friday, 19 June 2026
Register . Login

Physics Past Questions and Answers

Jamb 2023 Physics Questions

Question 26:
In the diagram above, if the south poles of two magnets stroke a steel bar, the polarities at X and Y will respectively be
  • A South and north
  • B North and south
  • C North and north
  • D South and south
View Answer & Explanation
Question 27:
Which of the following types of electromagnetic waves is used in night vision goggles?
  • A Microwaves
  • B Ultraviolet waves
  • C Infrared waves
  • D Radio waves
View Answer & Explanation
Question 28:
Which of the following is a type of wave that is both mechanical and longitudinal?
  • A Water waves
  • B Seismic waves
  • C Sound waves
  • D Light waves
View Answer & Explanation
Question 29:
In an AC circuit, resonance occurs when the impedance of the circuit is:
  • A Zero
  • B Maximum
  • C Equal to the capacitive reactance of the circuit
  • D Minimum
View Answer & Explanation
Question 30:
The pitch of a musical note is determined by the frequency of the sound wave that it produces. If two instruments have the same frequency, which of the following factors will [b]most[/b] affect the difference in their pitches?
  • A The shape of the instrument
  • B The tension of the string
  • C The size of the instrument
  • D The material of the instrument
View Answer & Explanation