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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Mass

Jamb Physics Questions - Mass

Question 6:
Which of the following statements is incorrect? The sensitivity of a galvanometer which incorporates an optical lever arrangement may be increased by providing
  • A A larger number of turns in the coil
  • B A thinner suspension with a small torsional control
  • C A special alloy permanent magnet which gives a high magnetic flux
  • D All of the above
  • E A light source with a greater intensity
View Answer & Explanation
Question 7:
A weight of 1000 grams hangs from a lever 20cm to the fulcrum. At the left is a 500-gram weight 20cm from the fulcrum, and a 200-gram weight x cm away from the fulcrum. What is the value of x that will make the lever balanced?
  • A 50cm
  • B 20cm
  • C 10cm
  • D 30cm
  • E 70cm
View Answer & Explanation
Question 8:
A uniform bean HK of length 10m and weighing 200N is supported at both ends as shown above. A man weighing 1000N stands at a point P on the beam. If the reactions at point H an K respectively are 800N and 400N, Then the distance HP is
  • A 4m
  • B 3.5m
  • C 3m
  • D \( 6 \frac{2}{3} \)m
  • E 7m
View Answer & Explanation
Question 9:
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
Question 10:
The mass of a proton is approximately equal to that of
  • A An \(\alpha\)-particle
  • B A \(\beta\)-particle
  • C \(\gamma\)-ray
  • D An electron
  • E A neutron
View Answer & Explanation