Which of the following processes is not a surface phenomenon?
Condensation
Evaporation
Photo emission
Thermionic emission
Which of the following does NOT cause a reduction of the surface tension of water
Soap solution
Detergent
Alcohol
Grease
The mass of a load is doubled while the force acting on it is halve. The resulting acceleration of the load is
Quadrupled
Quartered
Halved
Doubled
An object of mass 80 kg is pulled on a horizontal rough ground by a force of 500 N. Find the coefficient of static friction
0.6
0.4
1.0
0.8
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