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Physics Past Questions

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371

A conductor has a diameter of 1.00 mm and length 2.00m. if the resistance of the material is 0.1Ω, its resistivity is?

  • A. 2.55 x 105 Ωm
  • B. 2.55 x 102 Ωm
  • C. 3.93 x 10-6 Ωm
  • D. 3.93 x 10-8 Ωm
View Answer & Discuss (4) JAMB 2006
372

The energy E of a photon and its wavelength are related by Eλ = X. the numerical value of X is?
[h = 6.63 x 10\(^{-34}\)js, c = 3 x 10\(^8\) ms\(^{-1}\)]

  • A. 6.6 X 10-28
  • B. 1.99 X 10-27
  • C. 6.60 x 10-26
  • D. 1.99 x 10-25
View Answer & Discuss (12) JAMB 2007
373

The bond that forms a semiconductor is?

  • A. covalent
  • B. electrovalent
  • C. ionic
  • D. metallic
View Answer & Discuss (1) JAMB 2007
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374

Silicon doped with aluminum and germanium doped with arsenic become?

  • A. p- and n- types respectively
  • B. n- en p- type respectively
  • C. p- type semiconductor
  • D. n- type semiconductors
View Answer & Discuss (2) JAMB 2007
375

I. Force (N)
II.Torque (Nm)
III. Current (A)
IV. Power (W)
Which of the above are the correct S. I: units of the quantities indicated?

  • A. I and II only
  • B. I and III only
  • C. I, II and III only
  • D. I, II, III and IV only
View Answer & Discuss (3) JAMB 2008
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