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Physics 2003 JAMB Past Questions

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31
Which of the following pairs of light rays show the widest separation in the spectrum of white light
  • A. Blue and red
  • B. Green and yellow
  • C. Indigo and violet
  • D. Orange and red
View Answer & Discuss (10) JAMB 2003
32
The most suitable cell used for short interval switches in electric bells is a
  • A. lead- acid accumulator
  • B. Daniel cell
  • C. Leclanche cell
  • D. nickel iron accumulator
View Answer & Discuss (7) JAMB 2003
33
A ray incident on a glass prism undergoes minimum deviation when the
  • A. incident angle is equal to the angle of refraction
  • B. refraction angle equals 90o
  • C. incident angle equals 90o
  • D. incident angle is equal to the angle of emergence
View Answer & Discuss (1) JAMB 2003
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34
The count rate of a radioactive material is 800 count/min. If the half-life of the material is 4 days, what would the count rate be in 16 days later
  • A. 200 count / min
  • B. 100 count / min
  • C. 50 count / min
  • D. 25 count / min
View Answer & Discuss (15) JAMB 2003
35

A circuit has an area of 0.4m2 and consists of 50 loops of wire. If the loops are twisted and allowed to rotate at a constant angular velocity of 10 rad s-1 in a uniform magnetic field of 0.4T, the amplitude of the induced voltage is

  • A. 8V
  • B. 16V
  • C. 20V
  • D. 80V
View Answer & Discuss (15) JAMB 2003
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