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Wednesday, 04 November 2026
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Physics Past Questions and Answers

Jamb 2006 Physics Questions

Question 31:
I. The number of neutrons released exceeds the number that caused the fission.
II. There is loss of mass.
III. Energy is produced.
IV. Smaller nuclei merge to form larger nuclei
which of the statement above are correct about nuclear fission?
  • A II,III and IV only
  • B I, II and IV only
  • C I,II and III only
  • D I, III and IV only
View Answer & Explanation
Question 32:
A certain manufacturer wishes to make an n-type semiconductor. Which materials would he select for doping?
  • A Boron and antimony
  • B Boron and antimony
  • C Aluminium and indium
  • D Arsenic and antimony
View Answer & Explanation
Question 33:
A p-n junction diode is used as?
  • A A rectifier in a d.c circuit
  • B An amplifier in d.c circuit
  • C An anplifier in an a.c circuit
  • D A rectifier in an a.c circuit
View Answer & Explanation
Question 34:
An object placed 10cm from a concave mirror of focal length 5cm would have its image
  • A At the centre of convature
  • B At the radius of curvature
  • C At infinity
  • D 10 cm from the focus
View Answer & Explanation
Question 35:
A submarine is observed to rise from a real depth off 80 m to 60 m in water. calculate the change in apparent depth.
[Refraction index of water (4)/3]
  • A 45 m
  • B 80 m
  • C 15 m
  • D 60 m
View Answer & Explanation