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Physics 1981 JAMB Past Questions

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11
Heat may be transferred by conduction, convection and radiation. By which of these methods does heat travel through vacuum?
  • A. conduction only
  • B. convection only
  • C. radiation only
  • D. non of these methods
View Answer & Discuss (3) JAMB 1981
12
Which of the following statements is applicable to a real image formed by a concave mirror? i. it can be observed on a screen ii. it is always inverted and in front of the mirror iii. it only seams to exist IV. it is formed by the actual converging of rays of light
  • A. i, ii and iii
  • B. i, ii and iv only
  • C. i and ii only
  • D. i and ii only
  • E. all four statements
View Answer & Discuss (2) JAMB 1981
13
Which of the following is NOT an effect that can be produced by an electric current?
  • A. heat
  • B. light
  • C. sound
  • D. motion
  • E. none of the above
View Answer & Discuss (18) JAMB 1981
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14
A cell of e.m.f 2V and internal resistance 1\(\Omega\) supplies a current of 0.5 amps to a resistance whose value is
  • A. 0.5\(\Omega\)
  • B. 1\(\Omega\)
  • C. 2\(\Omega\)
  • D. 2.5\(\Omega\)
  • E. 3\(\Omega\)
View Answer & Discuss (6) JAMB 1981
15

An example of a scalar quantity is

  • A. velocity
  • B. weight
  • C. electric charge
  • D. acceleration due to gravity
  • E. momentum
View Answer & Discuss (9) JAMB 1981
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