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Saturday, 15 August 2026
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Physics Past Questions and Answers

Topic: Time

Jamb Physics Questions - Time

Question 1:
If in a simple pendulum experiment the length of the inextensible string is increased by a factor of four, its period is increased by a factor of
  • A 4
  • B \(\frac{\pi}{2}\)
  • C \(\frac{1}{4}\)
  • D 2\(\pi\)
  • E 2
View Answer & Explanation
Question 2:
In a certain fusion reaction, a deuteron (\(^{2}_{1}H\)) interacts with a triton (\(^{3}_{1}He\)) and produces an a-particle (\(^{4}_{2}He\)) and a second product. The second product is
  • A A proton
  • B An electron
  • C A neutron
  • D A gamma ray
View Answer & Explanation
Question 3:
A boy timed 30 oscillations of a certain pendulum thrice and obtained 1min. 10s, 1min. 12s and 1min. 7s respectively.The mean period of oscillation of the pendulum is
  • A 0.14s
  • B 0.43s
  • C 2.32s
  • D 6.97s
View Answer & Explanation
Question 4:
What is the frquency of vibration if the balance wheel of a wrist watch makes 90 revolutions in 25 s?
  • A 0.01 Hz
  • B 0.04 Hz
  • C 2.27 Hz
  • D 3.60 Hz
View Answer & Explanation
Question 5:
During summer, the balance wheel of a clock expands.what effect does this have on the accuracy of the clock?
  • A The clock gians time
  • B The accuracy of the clock is not affected
  • C The clock losses time
  • D The clock stops working
View Answer & Explanation