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Monday, 02 November 2026
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Physics Past Questions and Answers

Jamb 2007 Physics Questions

Question 26:
From the diagram above, the bob of the pendulum has the fastest speed at
  • A X
  • B Y
  • C Z
  • D W
View Answer & Explanation
Question 27:
In the diagram above, a rod 50 cm long of uniform cross-section is suspended horizontally on a fulcrum, F, by the action of two forces. What is the weight of the rod?
  • A 40N
  • B 80N
  • C 120N
  • D 200N
View Answer & Explanation
Question 28:
A boy drags a bag of rice along a smooth horizontal floor with a force of 2N applied at the angle of 60o to the floor.

The work done after a distance of 3m is
  • A 3 J
  • B 4 J
  • C 5 J
  • D 6 J
View Answer & Explanation
Question 29:
A blacksmith heated a metal whose cubic expansivity is 6.3 x 10-6K-1. The areal expansivity is
  • A 2.0 x 10<sup style='font-size: smaller;'>-6</sup>K<sup style='font-size: smaller;'>-1</sup>
  • B 2.1 x 10<sup style='font-size: smaller;'>-6</sup>K<sup style='font-size: smaller;'>-1</sup>
  • C 4.2 x 10<sup style='font-size: smaller;'>-6</sup>K<sup style='font-size: smaller;'>-1</sup>
  • D 6.3 x 10<sup style='font-size: smaller;'>-6</sup>K<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 30:
The ratio of the coefficient of linear expansion of two metals ∝1/∝[sub]2[/sub] is 3:4. If, when heated through the same temperature change, the ratio of the increase in length of the two metals, e1/e[sub]2[/sub] is 1:2, the ratio of the original lengths l1/l[sub]2[/sub] is
  • A <sup style='font-size: smaller;'>8</sup>/<sub style='font-size: smaller;'>3</sub>
  • B <sup style='font-size: smaller;'>3</sup>/<sub style='font-size: smaller;'>2</sub>
  • C <sup style='font-size: smaller;'>2</sup>/<sub style='font-size: smaller;'>3</sub>
  • D <sup style='font-size: smaller;'>3</sup>/<sub style='font-size: smaller;'>8</sub>
View Answer & Explanation