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- 1. Multiple Choice
The surface tension of liquid decreases with a rise in
viscosity of the liquid
temperature of the liquid
diameter of container
thickness of container
- 2. Multiple Choice
The rain drops are in spherical shape due to
viscosity
thrust on drop
surface tension
residual pressure
- 3. Multiple Choice
Dimensional formula of surface tension is
[MLT].
[MT-2].
[M0T-2].
[ML2T-2].
- 4. Fill in the Blank
Surface tension of a liquid is .......... the area of the liquid surface
- 5. Multiple Choice
The surface tension of a liquid is T. The increase in its energy on increasing the area of its surface by amount A is
TA
T2A
T
T2A2
- 6. Multiple Choice
The surface tension of a soap solution is 0.03N/m.The work done to produce a soap bubble of radius 0.05m is
1.6 x 10-3 J
2.6 x 10-3 J
1.6 x 10-6 J
1.88 x 10-3 J
- 7. Multiple Choice
A square wire frame of size L is dipped in a liquid. On taking out, a ,embrane is formed. If the surface tension of liquid is T, force acting on the entire frame will be
2TL
4TL
8TL
10TL
- 8. Multiple Choice
The force required to seperate two glass plates of area
10-2m2 with a film of water 0.05mm thickness between them is (surface tension of water is 70 x 10-3N/m)
25N
20N
14N
28N
- 9. Multiple Choice
8 mercury drops coalesce to form 1 mercury drop, the energy changes by a factor of
1
2
4
6
- 10. Multiple Choice
The force of attraction between the molecules of the same substance is called as
adhesive force
force of surface tension
cohesive force
electrostatic force
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