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Saturday, 15 August 2026
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Physics Past Questions and Answers

Topic: Surface tension

Jamb Physics Questions - Surface tension

Question 11:
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 12:
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