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Monday, 04 May 2026
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Physics Past Questions and Answers

Jamb Physics Questions

Question 126:
A tugboat is travelling from Asaba to Onitsha across the River Niger with a resultant velocity of 20 knots. If the river flows at 12 knots, the direction of motion of the boat relative to the direction of water flow is
  • A 36.87<sup style='font-size: smaller;'>o</sup>C
  • B 53.13<sup style='font-size: smaller;'>o</sup>C
  • C 90<sup style='font-size: smaller;'>o</sup>C
  • D 136<sup style='font-size: smaller;'>o</sup>C
  • E 143.13<sup style='font-size: smaller;'>o</sup>C
View Answer & Explanation
Question 127:
A milliameter of resistance 5\(\Omega\) and full scale deflection of 5m A is to used to measure a potential difference of 50 V. The resistance of the multiplier should be
  • A 95\(\Omega\)
  • B 110\(\Omega\)
  • C 595\(\Omega\)
  • D 995\(\Omega\)
  • E 1005\(\Omega\)
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Question 128:
An object of mass m and volume v, is totally immersed in a liquid of density p. The tension of a string holding it is
  • A Mg
  • B (m + pv)g
  • C (m - pv)g
  • D Pvg
  • E [M/m-pv]g
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Question 129:
The relative densities of zinc, brass, copper, gold and silver are respectively 7.1, 8.5, 8.9, 19.3, 10.5. A metal ornament which weighs 0.425kg and can displace 50 x 10-6m3m of water is made of
  • A Zinc
  • B Brass
  • C Copper
  • D Gold
  • E Silver
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Question 130:
Heat is supplied to a block of ice 0o until half of it has melted. Which of the following statements is true?
  • A The temperature rises and the ice exoands
  • B The temperature remains constant and the volume of ice decreases
  • C The ice gives out heat as it melts
  • D The mass remains constant and the temperature increases
  • E The mass decreases because some heat is lost to the atmosphere
View Answer & Explanation