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Thursday, 29 October 2026
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Physics Past Questions and Answers

Jamb 2017 Physics Questions

Question 26:
Determine the focal length of a thin converging lens if the power is 5.0 dioptres
  • A 0.1 m
  • B 0.2 m
  • C 2.0 m
  • D 2.5 m
View Answer & Explanation
Question 27:
A string of length 5cm is extended by 0.04m when a load of 0.8kg is suspended at the end. How far will it extend if a force of 16N is applied? [g = 10ms\(^{-2}\)]
  • A 0.04m
  • B 0.12m
  • C 0.01m
  • D 0.08m
View Answer & Explanation
Question 28:
How can energy loss be minimized through Eddy-current?
  • A By using high resistance wire
  • B By using insulated soft iron wires
  • C By using low resistance wires
  • D Bu using turns of wires
View Answer & Explanation
Question 29:
From the diagram above, calculate the energy stored in the capacitor
  • A 4.0 x 10\(^{-2}\)J
  • B 4.0 x 10\(^{-4}\)J
  • C 8.0 x 10\(^{-4}\)J
  • D 8.0 x 10\(^{-2}\)J
View Answer & Explanation
Question 30:
A constant force of 5N acts for a 5 seconds on a mass of 5kg initially at rest. Calculate the final momentum
  • A 125kgms−1
  • B 25kgms−1
  • C 15kgms−1
  • D 0kgms−1
View Answer & Explanation