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Wednesday, 29 July 2026
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Physics Past Questions and Answers

Jamb 2019 Physics Questions

Question 46:
When water is boiling, it
  • A Gets hotter
  • B Increase is mass
  • C Decreases in mass
  • D Changes to steam
View Answer & Explanation
Question 47:
A mixture of blue and red pigment when illuminated by white light will appear
  • A Green
  • B Orange
  • C Purple
  • D Magenta
View Answer & Explanation
Question 48:
A siren having a ring of 200 hole makes 132 rev/min. A jet of air is directed on the set of holes. Calculate the frequency and wavelength in air of the note produced (take v = 350m/s)
  • A 0.795m
  • B 0.625m
  • C 0.335m
  • D 0.125m
View Answer & Explanation
Question 49:
A man on a bench will exert the greatest pressure on the bench when he
  • A Lies flat on his back
  • B Lies flat on his belly
  • C Stands on both feet
  • D Stands on the toes of one foot
View Answer & Explanation
Question 50:
Gases conduct electricity under
  • A High pressure & high voltage
  • B Low pressure & low voltage
  • C Normal pressure & low voltage
  • D Low pressure & high voltage
View Answer & Explanation