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Wednesday, 19 August 2026
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Physics Past Questions and Answers

Topic: Structure of Matter and Kinetic Theory

Jamb Physics Questions - Structure of Matter and Kinetic Theory

Question 221:
According to kinetic molecular model in gases,
  • A The particles are closely packed together; they occupy minimum space are usually arranged in a regular pattern
  • B The particles vibrate about fixed positions and are held together by the strong intermolecular bonds between them
  • C The molecules are very far apart and occupy all the spaces made available to them
  • D The particles occur in clusters with molecules slightly further apart
View Answer & Explanation
Question 222:
An explosion occurs at an altitude of 312 m above the ground. If the air temperature is -10.00°C, how long does it take the sound to reach the ground?

[velocity of sound at \(0^oC\) = 331 ms-1]
  • A 0.94s
  • B 0.96s
  • C 0.93s
  • D 0.95s
View Answer & Explanation
Question 223:
Which of the following liquids has the highest surface tension?
  • A Soapy water
  • B Water
  • C Mercury
  • D Oil
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Question 224:
A positively charged particle is placed near a negatively charged particle. What is the direction of the electric force between the two particles?
  • A The electric force is directed from the negative particle to the positive particle.
  • B The electric force is zero.
  • C The direction of the electric force cannot be determined.
  • D The electric force is directed from the positive particle to the negative particle.
View Answer & Explanation
Question 225:
The surface temperature of a swimming pool on a warm day is 25ºC and the temperature at the bottom is 15ºC. If the swimming pool has a surface area of 620 \(m^2\) and a depth of 1.5m. Find the rate at which energy is transferred by conduction from the surface to the bottom of the swimming pool.

[Thermal conductivity of water (k) = 0.6071 Wm-1K-1]
  • A 2.5kw
  • B 250kw
  • C 300kw
  • D 3.0kw
View Answer & Explanation