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Monday, 02 November 2026
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Physics Past Questions and Answers

Jamb 2016 Physics Questions

Question 21:
A metre rule is pivoted at its mid-point with a vertical force of 10N hanging from the distance 30cm from the mid-point. At what distance must a 15N force hang to balance the ruler horizontally?
  • A 30cm
  • B 10cm
  • C 20cm
  • D 25m
View Answer & Explanation
Question 22:
A projectile is fired from the ground level with a velocity of 300ms-1 at an angle of a 30o to the horizontal.
Calculate the time taken to reach the maximum height?
[g = 10ms-2]
  • A 30s
  • B 20s
  • C 25s
  • D 15s
View Answer & Explanation
Question 23:
A train with an initial velocity of 20ms-1 is subjected to a uniform deceleration of 2ms-2. The time required to bring the train to a complete halt is
  • A 40s
  • B 10s
  • C 20s
  • D 5s
View Answer & Explanation
Question 24:
Which of the following electromagnetic waves has the shortest wavelength?
  • A Visible Light
  • B Ultraviolet rays
  • C Infrared rays
  • D Gamma rays
View Answer & Explanation
Question 25:
A radioactive isotope has a decay constant of 10-6s-1.
Calculate its half - life?
  • A 5.93 x 10<sup style='font-size: smaller;'>6</sup>s
  • B 6.93 x 10<sup style='font-size: smaller;'>7</sup>s
  • C 6.93 x 10<sup style='font-size: smaller;'>9</sup>s
  • D 5.93 x 10<sup style='font-size: smaller;'>7</sup>s
View Answer & Explanation