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A capillary tube is dipped into water. The height to which water rises in the tu

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Question: A capillary tube is dipped into water. The height to which water rises in the tube is determined by:

Options:

  1. Surface tension and density of the liquid
  2. Only surface tension
  3. Only density of the liquid
  4. Viscosity of the liquid

Correct Answer: Surface tension and density of the liquid

Solution: 

The height of the liquid column in a capillary tube is determined by both surface tension and the density of the liquid, as described by the capillary rise formula.

A capillary tube is dipped into water. The height to which water rises in the tu

Practice Questions

Q1
A capillary tube is dipped into water. The height to which water rises in the tube is determined by:
  1. Surface tension and density of the liquid
  2. Only surface tension
  3. Only density of the liquid
  4. Viscosity of the liquid

Questions & Step-by-Step Solutions

A capillary tube is dipped into water. The height to which water rises in the tube is determined by:
Correct Answer: Surface tension and density of the liquid
  • Step 1: Understand that a capillary tube is a very thin tube.
  • Step 2: When the tube is dipped into water, the water tries to climb up inside the tube.
  • Step 3: This climbing happens because of a force called surface tension, which pulls the water up.
  • Step 4: The height to which the water rises also depends on the density of the water.
  • Step 5: The balance between surface tension and the weight of the water column determines how high the water will rise.
  • Step 6: There is a formula that combines these factors to calculate the exact height.
  • Capillary Action – The ability of a liquid to flow in narrow spaces without the assistance of external forces, influenced by surface tension and adhesive forces.
  • Surface Tension – The elastic tendency of a fluid surface that makes it acquire the least surface area possible, crucial for the rise of liquid in a capillary tube.
  • Density of Liquid – The mass per unit volume of a liquid, which affects the height to which the liquid can rise in a capillary tube.
  • Capillary Rise Formula – The mathematical relationship that describes the height of liquid rise in a capillary tube, typically given by h = (2γcosθ)/(ρg), where γ is surface tension, θ is the contact angle, ρ is density, and g is acceleration due to gravity.
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