MEDIUM
11th Odisha Board
IMPORTANT
Earn 100

Define surface tension and angle of contact. Derive an expression for rise of water in a capillary tube.

Important Questions on Surface Tension

HARD
11th Odisha Board
IMPORTANT
Define adhesive force and cohesive force. Explain the shape of curves in terms of these forces.
MEDIUM
11th Odisha Board
IMPORTANT
The surface tension of a liquid _____ with rise of temperature.
EASY
11th Odisha Board
IMPORTANT
When there is no external forces, the shape of a small liquid drop is determined by _____ of the liquid.
HARD
11th Odisha Board
IMPORTANT
Two capillaries of different radii are held vertically in a liquid. The height of the liquid will be more in the tube of _____.
EASY
11th Odisha Board
IMPORTANT
Kerosene oil rises up in the wick of a lantern because of _____.
EASY
11th Odisha Board
IMPORTANT
A soap bubble has radius 5 cm. If the soap solution has a surface tension 30×10-3 N/m, the gauge pressure within the bubble is _____ Pa.
EASY
11th Odisha Board
IMPORTANT
When a soap bubble is charged it contracts.
EASY
11th Odisha Board
IMPORTANT
If a drop of oil is placed on the surface of water, it will spread as a thin layer.