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1166
In a cathode ray tube, the function of the x-plates is to
  • A. deflect the electron beam horizontally
  • B. deflect the electron beam vertically
  • C. reflect the electron beam
  • D. generate sinusoid waves
View Answer & Discuss (2) WAEC 2010
1167
A nuclide represented as \(^{70}_{32}X\) has a neutron-proton ratio of
  • A. 0.5
  • B. 0.8
  • C. 1.2
  • D. 1.5
View Answer & Discuss (2) WAEC 2010
1168
Neutrons are used to induce artificial radioactivity because they
  • A. are energetic
  • B. have no charge
  • C. have no mass
  • D. are ionizing
View Answer & Discuss (1) WAEC 2010
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1169
Which of the following statements is not correct?
  • A. molecules of ice, water and water vapour have equal intermolecular distances
  • B. molecules of ice, water and water vapour do not differ in the structure of their molecules
  • C. molecules of water vapour attract each other with forces far less than the forces of attraction between water molecules
  • D. water is less compressible than water vapour
View Answer & Discuss (5) WAEC 2011
1170
The density P of a spherical ball of diameter d and mass m is given by
  • A. P = \(\frac{3m}{4 \pi d^3}\)
  • B. p = 4\(\pi md^3\)
  • C. p = \(\frac{6m}{\pi d^3}\)
  • D. p = \(\frac{3m}{2 \pi d^3}\)
View Answer & Discuss (4) WAEC 2011
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