Search SchoolNGR

Friday, 30 October 2026
Register . Login

Physics Past Questions and Answers

Jamb 1981 Physics Questions

Question 26:
The lack of power of accommodation which is mainly due to the hardening of the eye lens and is usual with onset of old age is called?
  • A Myopia
  • B Hypermyopia
  • C Presbyopia
  • D Astigmatism
  • E Eye ring
View Answer & Explanation
Question 27:
A body falls freely under gravity (g = 9.8ms-2) from a height of 40m on to the top of a platform 0.8m above the ground. Its velocity on reaching the platform is
  • A 784ms<sup style='font-size: smaller;'>-1</sup>
  • B 80ms<sup style='font-size: smaller;'>-1</sup>
  • C 78.4ms<sup style='font-size: smaller;'>-1</sup>
  • D 39.2ms<sup style='font-size: smaller;'>-1</sup>
  • E 27.7ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 28:
Alternating current can induce voltage because it has a
  • A Ripple value
  • B Varying magnetic field
  • C Weaker magnetic field than direct current
  • D Stonger magnetic field than direct current
  • E High peak value
View Answer & Explanation
Question 29:
Two particles X and Y starting from rest cover the same distance. The acceleration of X is twice that of Y. the ratio of the time taken by X to that taken by Y is
  • A \(\frac{1}{2}\)
  • B \(\frac{1}{\sqrt2}\)
  • C \(\frac{1}{\sqrt2}\)
  • D \(\sqrt 2\)
  • E 4
View Answer & Explanation
Question 30:
a balloon inflated with helium gas at ground level is released. As it rises through a constant temperature atmosphere.
  • A Its pressuren reduces but volume remains constant
  • B Te product of pressure and volume remains constant
  • C Both pressure and volume increases
  • D Its pressure remains constant but the volume decreases
  • E Both pressure and volume remains constant
View Answer & Explanation