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Due to the property of surface tension a drop or bubble tries to contract and so compresses the matter enclosed. This in turn increases the internal pressure which prevents fu
11.12 Applications of Bernoullis Theorem.
(i) Attraction between two closely parallel moving boats (or buses) : When two boa
A solid is that state of matter in which its constituent atoms or molecules are held strongly at the position of minimum potential energy and it has a definite shape and volum
When one end of capillary tube of radius r is immersed into a liquid of density d which wets the sides of the capillary tube (water and capillary tube of gla
If a liquid is filled in a vessel up to height H and a hole is made at a depth h below the free surface of the liquid as shown in fig. then taking the level
If a body of weight W is placed on the liquid surface, whose surface tension is T. If F is the minimum force required to pull it away from the water
(1) When mercury is split on a clean glass plate, it forms gl
Properties of colloidal solutions:-
The main properties of the colloidal solutions are discussed below:-
Physical properties:-
The ratio of change in configuration to the original configuration is called strain.
Being the ratio of two like quantities, it has no dimensions and units.
If by gradually increasing the load on a vertically suspended metal wire, a graph is plotted between stress (or load) and longitudinal stra
(1) Translatory equilibrium : When a body of density P and volume V is immersed in a liquid of density O, the forces acting on the body are
The three states of matter differ from each other due to the following two factors.
(1) The different magnitudes of the interatomic and intermolecular forces.
A wave is a disturbance which propagates energy and momentum from one place to the other without the transport of matter.
(1) Necessary properties of the me
When a force is applied on a body there will be relative displacement of the particles and due to property of elasticity an internal restoring force is developed which tends t
(1) Formation of double bubble : If r1 and r2 are the radii of smaller and larger bubble and P0 is the atmospheric
The normal force exerted by liquid at rest on a given surface in contact with it is called thrust of liquid on that surface.
The normal force (or thrust) exerted by
The equation of continuity is derived from the principle of conservation of mass.
A non-viscous liquid in streamline flow passes thro
We know that a liquid assumes the shape of the vessel in which it is contained i.e. it can not oppose permanently any force that tries to change its shape. As the eff
Angle of contact between a liquid and a solid is defined as the angle enclosed between the tangents to the liquid surface and the solid surface inside the liquid, both the tan
(1) The body which requires greater deforming force to produce a certain change in dimension is more elastic.
Example : Ivory and steel balls are more elastic than
It is defined as the ratio of normal stress to longitudinal strain within limit of proportionality.Y=
When a deforming force is applied on a body then the strain does not change simultaneously with stress rather it lags behind the stress. The lagging of strain behind the stres
(1) Elasticity : The property of matter by virtue of which a body tends to regain its original shape and size after the removal of deforming force is called e
Within limits of proportionality, the ratio of tangential stress to the shearing strain is called modulus of rigidity of the material of the body and is denoted by h,
Law of Conservation of Energy :Energy can neither be created nor be destroyed.
Law of Conservation of Mechanical Energy: It states that&nbs
Interatomic Forces
The forces between the atoms due to electrostatic interaction between the charges of the atoms are called interatomic forces. Th
It states that if gravity effect is neglected, the pressure at every point of liquid in equilibrium of rest is same.
Poiseuille studied the stream-line flow of liquid in capillary tubes. He found that if a pressure difference (P) is maintained across the two ends of a capillary tube
(1) Stream line flow : Stream line flow of a liquid is that flow in which each element of the liquid passing through a point travels along the same path
In case of steady flow of a fluid when a layer of fluid slips or tends to slip on adjacent layers in contact, the two layer exert tangential force on each other which tries to
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