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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Mass

Jamb Physics Questions - Mass

Question 26:
When a known standard resistor of 2\(\Omega\) is connected to the 0.0cm end of a meter bridge, the balance point is found to be at 55.0cm. What is the value of the unknown resistor?
  • A 1.10\(\Omega\)
  • B 1.64\(\Omega\)
  • C 2.44\(\Omega\)
  • D 27.50\(\Omega\)
View Answer & Explanation
Question 27:
An object of mass 400g and density 600kgm-3 is suspended with a sting so that half of it is immersed in paraffin of density 900kgm-3. The tension in the string is
  • A 1.0N
  • B 3.0N
  • C 4.0N
  • D 5.0N
View Answer & Explanation
Question 28:
In the fig above,A lever of length 200m is used to lift a load of mass 180kg. The pivot at P is 20m from the load. what minimum force F must be applied at the end of the lever [g = 10ms-2]
  • A 9N
  • B 18N
  • C 20N
  • D 200N
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Question 29:
The mass of a specific gravity bottle is 15.2g when it is empty. it is 24.8g when filled with kerosene and 27.2g when filled with distilled water. Calculate the relative density of kerosene
  • A 1.25
  • B 1.10
  • C 0.90
  • D 0.80
View Answer & Explanation
Question 30:
Two similar kettles containing equal masses of boiling water are placed on a table. If the surface of one is highly polished and the surface of the other is covered with soot, Which of the following observations is correct
  • A The two kettles will cool down at the same rate
  • B The polished kettle cools down more quickly by conduction
  • C The kettle covered with soot cools down more quickly because it is a good radiator
  • D The kettle covered with soot cools down more quickly by the process of heat convection
View Answer & Explanation