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Monday, 04 May 2026
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Physics Past Questions and Answers

Jamb Physics Questions

Question 141:
A man stands one-third of the way between two walls and claps his hands, He hears two distinct echoes 1s apart. If the speed of sound is 330ms-1 the distance between the wall is
  • A 33m
  • B 110m
  • C 220m
  • D 330m
  • E 495m
View Answer & Explanation
Question 142:
A cell has an open circuit voltage V1 and a closed circuit voltage V2 when a current is flowing through it. Therefore, the internal resistance of the cell is
  • A \(\frac{V_2}{I}\)
  • B \(\frac{V_1}{I}\)
  • C \(\frac{(V_1 + V_2)}{I}\)
  • D \(\frac{(V_1 - V_2)}{I}\)
  • E \(\frac{(V_2 - V_1)}{I}\)
View Answer & Explanation
Question 143:
According to Ohm's law, the ratio V/I is constant for
  • A An electrolyte
  • B A diode
  • C A transistor
  • D Silver
  • E All of the above
View Answer & Explanation
Question 144:
In the process of electrification by induction, the amount of induced charge in relation to the inducing charge is the
  • A Same in sign and quantity
  • B Same in sign but greater
  • C Opposite in sign but greater
  • D Opposite in sign but less
  • E Opposite in sign but equal
View Answer & Explanation
Question 145:
The activity of a radioactive substance depends on
  • A Temperature and purity
  • B Temperature and age
  • C Purity and age
  • D Age, purity and temperature
  • E None of the above
View Answer & Explanation