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Physics 2009 WAEC Past Questions

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41
An inductor of inductance 1.0H is connected in series with a capacitor of capacitance 2.0\(\mu F\) in an a.c. circuit. to resonate
  • A. 112.5Hz
  • B. 225.0Hz
  • C. 323.5Hz
  • D. 707.1Hz
View Answer & Discuss (3) WAEC 2009
42
An ammeter connected to an a.c circuit records 5.5. The peak current in the circuit is
  • A. 7.8A
  • B. 7.1A
  • C. 3.8A
  • D. 3.5A
View Answer & Discuss WAEC 2009
43
Two isotopes of uranium are designed as \(^{238}U\) and \(^{235}U\). The numbers 238 and 235 represent their
  • A. atomic numbers
  • B. nucleon numbers
  • C. proton numbers
  • D. neutron numbers
View Answer & Discuss (5) WAEC 2009
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44

The main difference between x-rays and \(\gamma-rays\) lies in their

  • A. ionizing ability
  • B. absorption rate
  • C. mode of production
  • D. mode of propagation
View Answer & Discuss (9) WAEC 2009
45
An electron of mass 9.1 x 10-31 kg moves with a speed of 107ms-1. Calculate the wavelength of the associates wave[h = 6.6 x 10-34Js]
  • A. 9.0 x 10-24m
  • B. 4.55 x 10-17m
  • C. 7.25 x 10-11m
  • D. 6.20 x 10-8m
View Answer & Discuss (2) WAEC 2009
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