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Sunday, 03 May 2026
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Physics Past Questions and Answers

Jamb Physics Questions

Question 201:
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 10<sup style='font-size: smaller;'>5</sup>N
  • B 1.03 x 10<sup style='font-size: smaller;'>4</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • C 1.06 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • D 2.06 x 10<sup style='font-size: smaller;'>6</sup>N
  • E 1.03 x 10<sup style='font-size: smaller;'>3</sup>N
View Answer & Explanation
Question 202:
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 & Explanation
Question 203:
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 & Explanation
Question 204:
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 & Explanation
Question 205:
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 by 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 & Explanation