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251

The difference between X-rays and gamma rays is that

  • A. x-rays are more penetrating than gamma rays
  • B. x-rays are electromagnetic radiations while gamma rays are negatively charged radiation
  • C. x-rays have higher frequencies than gamma rays
  • D. x-rays arise from energy changes in the electronic structure of atoms while gamma rays come from the nucleus
View Answer & Discuss (8) JAMB 2004
252
To protect a material from the influnce of an external magnetic field, the materials should be kept
  • A. square steel ring
  • B. triangular zinc ring
  • C. soft iron ring
  • D. loop of copper wire
View Answer & Discuss (6) JAMB 2004
253
In the diagram above, the ratio of he electric power dissipated in the 6Ω and the 3Ω resistor respectively is
  • A. 2:1
  • B. 2:2
  • C. 1:3
  • D. 1:2
View Answer & Discuss (14) JAMB 2004
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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254

If the angle between two vectors P and Q is Oº, the vectors are said to

  • A. intersect at the angle 45o
  • B. intersect at the angle 60o
  • C. be parallel
  • D. be perpendicular
View Answer & Discuss (3) JAMB 2004
255
A body of mass 4kg is acted on by a constant force of 12N for 3 seconds. The kinetic energy gained by the body at the end of the time is
  • A. 144J
  • B. 162J
  • C. 81J
  • D. 72J
View Answer & Discuss (6) JAMB 2004
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WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts