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Physics 1999 JAMB Past Questions

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36
A semiconductor diode is used in rectifying alternating current into direct current mainly because it
  • A. allows current to flow in either direction
  • B. is non-linear
  • C. offers a high input resistance
  • D. allows current to flow only in one direction
View Answer & Discuss (5) JAMB 1999
37
if ∆x is the uncertainty in the measurement of the position of a particle along the x-axis and ∆Px is the uncertainty in the measurement of the linear momentum along the x-axis, then the uncertainty principle relation is given as
  • A. ∆x ∆Px ≥ h
  • B. ∆x ∆Px = 0
  • C. ∆x ∆Px < h
  • D. ∆x ∆Px = ∞
View Answer & Discuss (15) JAMB 1999
38
If ∆x is the uncertainty in the measurement of the position of a particle along the x-axis and ∆Pa is the uncertainty in the measurement of the linear momentum along the x-axis, then the uncertainty principle relation is given as
  • A. ∆x ∆Px ≥ h
  • B. ∆x ∆Px = 0
  • C. ∆x ∆Px < h
  • D. ∆x ∆Px = ∞
View Answer & Discuss (1) JAMB 1999
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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39
The diagram above shows the velocity-time graph of a vehicle. Its acceleration and retardation respectively are
  • A. 8.0 ms-2, 4,0 ms-2
  • B. 4.0 ms-2, 8.0 ms-2
  • C. 4.0 ms-2, 2.0 ms-2
  • D. 2.0 ms-2, 4.0 ms-2
View Answer & Discuss (8) JAMB 1999
40

The figure above represents a frictionless pulley system in which a weight W is in equilibrium with a weight of 40N. Find the value of W

  • A. 13.3N
  • B. 20.0N
  • C. 40.0N
  • D. 80.0N
View Answer & Discuss (38) JAMB 1999
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