Search SchoolNGR

Friday, 06 November 2026
Register . Login

Physics Past Questions and Answers

Jamb 2005 Physics Questions

Question 41:
106J of heat is required to boil off completely 2kg of a certain liquid. Neglecting heat lost to the surroundings, the latent heat of vaporization of the liquid is
  • A 2.0 x 10<sup style='font-size: smaller;'>6</sup>J kg<sup style='font-size: smaller;'>-1</sup>
  • B 5.0 x 10<sup style='font-size: smaller;'>6</sup>J kg<sup style='font-size: smaller;'>-1</sup>
  • C 2.0 x 10<sup style='font-size: smaller;'>5</sup>J kg<sup style='font-size: smaller;'>-1</sup>
  • D 5.0 x 10<sup style='font-size: smaller;'>5</sup>J kg<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 42:
The figure above shows three capacitors, 2μF, 3μF and 6μF connected in series. If the p.d across the system is 12V, the p.d, across the 6μF capacitor is
  • A 4V
  • B 12V
  • C 2V
  • D 6V
View Answer & Explanation
Question 43:
If the distance between two point charges its increased by a factor of four, the magnitude of the electrostatic force between them will be
  • A <sup style='font-size: smaller;'>1</sup>/<sub style='font-size: smaller;'>4</sub> of its former value
  • B <sup style='font-size: smaller;'>1</sup>/<sub style='font-size: smaller;'>16</sub> of its former value
  • C <sup style='font-size: smaller;'>1</sup>/<sub style='font-size: smaller;'>2</sub> of its former value
  • D 4 times its former value
View Answer & Explanation
Question 44:
The velocity of sound in air will be doubled if it's absolute temperature is
  • A Quadrupled
  • B Constant
  • C Halved
  • D Doulbed
View Answer & Explanation
Question 45:
A force of 200N acts between two objects at a certain distance apart. The value of the force when the distance is halved is
  • A 400N
  • B 200N
  • C 100N
  • D 800N
View Answer & Explanation