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Wednesday, 29 July 2026
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Physics Past Questions and Answers

Jamb 2019 Physics Questions

Question 41:
The earth's gravitational field intensity at its surface is about
(G = 6.7 à— 10\(^{-11}\)Nm\(^2\)/kg\(^2\), mass of the earth is 6 à— 10\(^{24}\)kg, radius of the earth is 6.4 à— 10\(^6\)m, g on the earth = 9.8m/s\(^2\))
  • A 6.7N/kg
  • B 7.9N/kg
  • C 8.0N/kg
  • D 9.8N/kg
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Question 42:
The following are parts of the eye
I. Retina
II. Pupil
III. Iris
The correct equivalent in the camera in the same order are
  • A Diaphragm, Aperture, film
  • B Aperture, Diaphragm, Film
  • C Film, Diaphragm, Aperture
  • D Film, Aperture, Diaphragm
View Answer & Explanation
Question 43:
According to kinetic molecular model, in gases
  • A The particles are closely packed together, they occupy minimum space & are usually arranged in a regular pattern
  • B The particles occur in clusters with molecules slightly farther apart
  • C The molecule are very fast apart & occupy all the space made available
  • D The particle vibrate about fixed positions and are held together by the strong intermolecular bonds between them
View Answer & Explanation
Question 44:
The momentum of a car moving at a constant speed in a circular track
  • A Can be both positive and negative
  • B Can be zero depending on its position in the track
  • C Can be zero depending on its position in the track
  • D A centrifugal
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Question 45:
The lead-acid accumulator consists of
  • A Lead as the positive electrode
  • B Lead acid as the negative electrode
  • C Hydrochloric acid as the electrolyte
  • D Tetraoxosulphate (vi) acid as the electrolyte
View Answer & Explanation