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Physics 1982 JAMB Past Questions

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1
The hatch door of a submarine has an area of 0.5m2. The specific gravity of sea water is 1.03. Assume that g = 10ms-1,and neglect the atmospheric pressure. The force exerted by the sea water on the hatch door at a depth of 200m is
  • A. 1.03 x 105N
  • B. 1.03 x 104Nm-2
  • C. 1.06 x 105Nm-2
  • D. 2.06 x 106N
  • E. 1.03 x 103N
View Answer & Discuss (8) JAMB 1982
2
A man stands on a spring scale placed in a lift. The lift descends at constant velocity. As a result, the scale reads a weight
  • A. greater than the weight of the man
  • B. the same as the weight of the man
  • C. of zero
  • D. less than the weight of the man
  • E. greater than the weight of the man by 1kg
View Answer & Discuss (14) JAMB 1982
3

One of the following readings represents the measurement of the length of a metal rod using vernier callipers, Taking the reading accuracy into consideration, the most likely one is

  • A. 5.15cm
  • B. 5.165cm
  • C. 5.0cm
  • D. 5.160cm
  • E. 5cm
View Answer & Discuss (7) JAMB 1982
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4
When equal weights of iron and water are subjected to equal supply of heat, it is found that the piece of iron become more hotter than water after a short time because
  • A. the specific heat of iron is higher than that of water
  • B. iron is in solid form
  • C. water is in liquid form
  • D. the specific heat of water is higher than that of iron
  • E. the specific heat of iron is infinite
View Answer & Discuss (5) JAMB 1982
5

The tyre pressure of a car was found to be 150cmHg in the morning at a temperature of 27°C. Hard driving in the afternoon raised the temperature of the tyres to 57°C. The tyre pressure had by the afternoon was?

  • A. increased by 15.0cm Hg
  • B. decreased by 15.0cm Hg
  • C. increased by 22.50cm
  • D. decreased by 22.50cm Hg
  • E. remained constant
View Answer & Discuss (9) JAMB 1982
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