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Physics 1987 JAMB Past Questions

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36
The direction of the magnetic field at a point in the vicinity of a bar magnet is
  • A. always towards the north pole of the magnet
  • B. always away from the south pole of the magnet
  • C. along the line joining the point to the neutral point
  • D. in the direction the north pole of a compass needle would point
View Answer & Discuss (2) JAMB 1987
37
When two parallel wires carry currents in opposite directions, the force on either wire is
  • A. away from the other wire
  • B. zero, because the currents cancel each other
  • C. twice as much as when the currents are in the same direction
  • D. towards the other wire
View Answer & Discuss (9) JAMB 1987
38

A galvanometer of resistance 20\(\Omega\) is to be provided with a shunt that \(\frac{1}{10}\) of the whole current in a circuit passes through the galvanometer. The resistance of the shunt is

  • A. 2.00\(\Omega\)
  • B. 2.22\(\Omega\)
  • C. 18.00\(\Omega\)
  • D. 18.22\(\Omega\)
View Answer & Discuss (12) JAMB 1987
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39
What type of reaction is represented by the following scheme? \( ^2 _1X \) + \( ^{2} _{1}Y \) + \( ^{3} _{2}Z \) + \( ^{1} _{0}n \) + energy
  • A. Fusion reaction
  • B. Fission reaction
  • C. Chain reaction
  • D. Radioactive decay
View Answer & Discuss (5) JAMB 1987
40

Which of the following statements is TRUE of photoelectric effect?

  • A. it cannot occur in liquids
  • B. the energy of the emitted electrons is independent of the work function of the surface
  • C. the energy of the emitted electron depends on the wavelength of the incident light
  • D. the greater the intensity of the incuident light, the greater the incident of the emitted electron
View Answer & Discuss (7) JAMB 1987
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