Questions in Mechanical Properties of Fluids

Select	Question
	Due to which property of water, tiny particles of camphor dance on the surface of water
	The force required to separate two glass plates of area ${{10}^{-2}}{{m}^{2}}$ with a film of water 0.05 mm thick between them, is (Surface tension of water is $70\times {{10}^{-3}}$N/m)
	Oil spreads over the surface of water whereas water does not spread over the surface of the oil, due to
	Cohesive force is experienced between
	The property utilized in the manufacture of lead shots is
	The dimensions of surface tension are
	A wooden stick 2m long is floating on the surface of water. The surface tension of water 0.07 N/m. By putting soap solution on one side of the sticks the surface tension is reduced to 0.06 N/m. The net force on the stick will be
	A thread is tied slightly loose to a wire frame as in figure and the frame is dipped into a soap solution and taken out. The frame is completely covered with the film. When the portion A punctured with a pin, the thread.
	The force required to take away a flat circular plate of radius 2 cm from the surface of water, will be (the surface tension of water is 70 dyne/cm)
	Surface tension may be defined as