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Physics 2002 NECO Past Questions

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26
The use of electrical fuses in domestic wiring is
  • A. to prevent and electrical shock
  • B. to supply electricity to all the electrical appliances
  • C. to allow electricity to flow easily through the mains to all the circuits
  • D. to cut off the mains supply it too high a current flows
  • E. to fuse all the circuit into one
View Answer & Discuss (5) NECO 2002
27
Which radiation is emitted when a beam of fast moving cathode rays is stopped by a heavy element?
  • A. Alpha rays
  • B. Gamma rays
  • C. Positive rays
  • D. Ultraviolet rays
  • E. X-rays
View Answer & Discuss (3) NECO 2002
28

An object is projected with a velocity of 50ms-1 from ground level at an angle θ to the vertical. If the total time of flight of the projectile is 5s, what is the value of θ? (g = 10ms-2)

  • A.
  • B. 30°
  • C. 45°
  • D. 60°
  • E. 90°
View Answer & Discuss (10) NECO 2002
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29
What is stored by a dry Leclanhé cell?
  • A. chemical energy
  • B. heat energy
  • C. mechanical energy
  • D. nuclear energy
  • E. solar energy
View Answer & Discuss (1) NECO 2002
30
Lenz’s law of electromagnetic induction states that
  • A. e.m.f. is induced in a circuit whenever there is a change in the magnetic flux linked with the circuit
  • B. the induced e.m.f. in a circuit is proportional to the rate of change f the number of lines of force linking the circuit
  • C. the induced current in a conductor is in such a direction as to oppose the change producing it
  • D. a force is exerted in a current-carrying conductor in a magnetic field.
  • E. the induced e.m.f. is proportional to the current producing the magnetic flux.
View Answer & Discuss NECO 2002
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