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Monday, 02 November 2026
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Physics Past Questions and Answers

Jamb 2014 Physics Questions

Question 21:
Heat transfer by convection in a liquid is due to the
  • A Latent heat of vaporization of the liquid
  • B Increased vibration of the molecules of the liquid about theit mean position
  • C Variation of density of the liquid
  • D Expansion of the liquid as it is heated
View Answer & Explanation
Question 22:
The distance between two successive crests of a wave is 15cm and the velocity 300ms-1. Calculate the frequency.
  • A 2.0x10<sup style='font-size: smaller;'>2</sup>Hz
  • B 4.5x10<sup style='font-size: smaller;'>3</sup>Hz
  • C 2.0x10<sup style='font-size: smaller;'>3</sup>Hz
  • D 4.5x10<sup style='font-size: smaller;'>2</sup>Hz
View Answer & Explanation
Question 23:
A boy receives the echo of his clap reflected by a nearby hill 0.8s later. How far is he from the hill?
  • A 528m
  • B 66m
  • C 136m
  • D 264m
View Answer & Explanation
Question 24:
An object is placed 10m from a pinhole camera of length 25cm. Calculate the linear magnification.
  • A 2.5x10<sup style='font-size: smaller;'>2</sup>
  • B 2.5x10<sup style='font-size: smaller;'>-2</sup>
  • C 2.5x10<sup style='font-size: smaller;'>-1</sup>
  • D 2.5x10<sup style='font-size: smaller;'>1</sup>
View Answer & Explanation
Question 25:
The focal length of a concave mirror is 2.0cm. If an object is placed 8.0cm from it, the image is at
  • A 2.7m
  • B 2.0m
  • C 2.3m
  • D 2.5m
View Answer & Explanation