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Wednesday, 28 October 2026
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Physics Past Questions and Answers

Jamb 2003 Physics Questions

Question 31:
Which of the following pairs of light rays show the widest separation in the spectrum of white light
  • A Blue and red
  • B Green and yellow
  • C Indigo and violet
  • D Orange and red
View Answer & Explanation
Question 32:
The most suitable cell used for short interval switches in electric bells is a
  • A Lead- acid accumulator
  • B Daniel cell
  • C Leclanche cell
  • D Nickel iron accumulator
View Answer & Explanation
Question 33:
A ray incident on a glass prism undergoes minimum deviation when the
  • A Incident angle is equal to the angle of refraction
  • B Refraction angle equals 90<sup style='font-size: smaller;'>o</sup>
  • C Incident angle equals 90<sup style='font-size: smaller;'>o</sup>
  • D Incident angle is equal to the angle of emergence
View Answer & Explanation
Question 34:
The count rate of a radioactive material is 800 count/min. If the half-life of the material is 4 days, what would the count rate be in 16 days later
  • A 200 count / min
  • B 100 count / min
  • C 50 count / min
  • D 25 count / min
View Answer & Explanation
Question 35:
A circuit has an area of 0.4m2 and consists of 50 loops of wire. If the loops are twisted and allowed to rotate at a constant angular velocity of 10 rad s-1 in a uniform magnetic field of 0.4T, the amplitude of the induced voltage is
  • A 8V
  • B 16V
  • C 20V
  • D 80V
View Answer & Explanation