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Thursday, 16 April 2026
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Physics Past Questions and Answers

Jamb 2004 Physics Questions

Question 6:
X rays can be used in the study of crystal structure because they
  • A Have a very long-reaching wavelength
  • B Have extremely short wavelength
  • C Are invisible
  • D Are very fast
View Answer & Explanation
Question 7:
A moving coil galvanometer has a full-scale deflection of 3A equivalent to 30o deflection. The sensitivity of the instrument is
  • A 33.0
  • B 0.1
  • C 90.0
  • D 10.0
View Answer & Explanation
Question 8:
The particle and wave nature of matter are demonstrated in the equation
  • A λ = <sup style='font-size: smaller;'>hc</sup>/<sub style='font-size: smaller;'>E</sub>
  • B λ = <sup style='font-size: smaller;'>h</sup>/<sub style='font-size: smaller;'>P</sub>
  • C λ = <sup style='font-size: smaller;'>c</sup>/<sub style='font-size: smaller;'>f</sub>
  • D λ = 2 d sin θ
View Answer & Explanation
Question 9:
In a reverse biased junction diode, current flows in by
  • A Positive holes alone
  • B Majority carriers
  • C Electron alone
  • D Minority carriers
View Answer & Explanation
Question 10:
In a tuned radio receiver R, L, C series circuit for resonance, the inductive and capacitive reactance XL and XC respectively are related as
  • A X<sub style='font-size: smaller;'>L</sub> = X<sub style='font-size: smaller;'>C</sub>
  • B X<sub style='font-size: smaller;'>L</sub> = <sup style='font-size: smaller;'>1</sup>/<sub style='font-size: smaller;'>2</sub>X<sub style='font-size: smaller;'>C</sub>
  • C X<sub style='font-size: smaller;'>L</sub> = <sup style='font-size: smaller;'>1</sup>/<sub style='font-size: smaller;'>XC</sub>
  • D X<sub style='font-size: smaller;'>L</sub> = 2X<sub style='font-size: smaller;'>C</sub>
View Answer & Explanation