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Monday, 02 November 2026
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Physics Past Questions and Answers

Jamb 2015 Physics Questions

Question 46:
What is the magnitude of the couple which acts on a rotating circular disc of radius 2m, if a constant tangential force of 2N is responsible for the rotation.
  • A 15Nm
  • B 25Nm
  • C 3Nm
  • D 4Nm
View Answer & Explanation
Question 47:
Transformers are designed so that energy losses are reduced to a minimum. This is achieved through those process.
I. Using a soft iron ore
II. Laminating the iron core to reduce energy loses due to eddy current
III. Designing an efficient iron core
  • A I & II only
  • B II only
  • C I, II, & III only
  • D III only
View Answer & Explanation
Question 48:
The two liquids which are often used in thermometer on experiment basic is known as
  • A Mercury only
  • B Alcohol and Water
  • C Mercury and Alcohol
  • D Alcohol only
View Answer & Explanation
Question 49:
Neutron were discovered by
  • A J.J. Thompson
  • B James Chadwick
  • C Michael faraday
  • D Dalton
View Answer & Explanation
Question 50:
If a projectile has maximum range of 36m, find the speed of projection (Take g = 9.8m/s2)
  • A 27m/s<sup style='font-size: smaller;'>2</sup>
  • B 2m/s<sup style='font-size: smaller;'>2</sup>
  • C 4m/s<sup style='font-size: smaller;'>2</sup>
  • D 7m/s<sup style='font-size: smaller;'>2</sup>
View Answer & Explanation