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Wednesday, 04 November 2026
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Physics Past Questions and Answers

Jamb 2013 Physics Questions

Question 26:
What is the velocity of sound at 100 oC if the velocity of sound at 0 oC is 340ms -1?
  • A 497m<sup style='font-size: smaller;'>-1</sup>
  • B 440m<sup style='font-size: smaller;'>-1</sup>
  • C 397m<sup style='font-size: smaller;'>-1</sup>
  • D 240m<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 27:
If a sonometer has a fundamental frequency of 450HZ, what is the frequency of the fifth overtone?
  • A 2700Hz
  • B 456Hz
  • C 444Hz
  • D 75Hz
View Answer & Explanation
Question 28:
A man 1.5m tall is standing 3m in front of a pinhole camera whose distance between the hole and the screen is 0.1m. What is the height of the image of the man on the screen?
  • A 0.05m
  • B 0.15m
  • C 0.30m
  • D 1.00m
View Answer & Explanation
Question 29:
A ray of light passing through the centre of curvature of a concave mirror is reflected by the mirror at
  • A 0<sup style='font-size: smaller;'>o</sup>
  • B 45<sup style='font-size: smaller;'>o</sup>
  • C 90<sup style='font-size: smaller;'>o</sup>
  • D 180<sup style='font-size: smaller;'>o</sup>
View Answer & Explanation
Question 30:
Total internal reflection will not occur when light travels from
  • A Water to air
  • B Water into glass
  • C Glass to air
  • D Glass into water
View Answer & Explanation