upper class boundary

'A specified part of the universe which is under investigation is called the system'. The system is separated from the rest of the universe by a definite (real or imaginary) boundary..

when a ray of light is incident on the boundary separating the two media having different densitie..

It is the anterior opening of the digestive system which ingests food. It has a muscular tongue on which are arranged the taste buds. There are two rows of teeth - upper and low..

A system is said to be heterogeneous if it consists of parts separated by definite boundaries, each of which has different physical and chemical properties. A mixture of fertilizer granules (N P K) or ice with water are typical examples of this syste..

Colloidal sols are biphasic in nature. It consists of the dispersed phase and the dispersion medium. In the colloidal solution, each particle is contained within its own surface boundary and therefore has a separate existence from the dispersion mediu..

Heterogenous nature - Colloidal sols are biphasic in nature. It consists of the dispersed phase and the dispersion medium. In the colloidal solution, each particle is contained within its own surface boundary and therefore has a separate existence from the dispersion mediu..

The coarse particles of the solid being heavier than the liquid (usually water), settle down due to gravity. The clear upper layer of the liquid is then gently poured out into another container. Settling down of the coarse particles due to the effect of gravity is called sedimentation. T..

It is the dorsal canal formed by the cavity between the periotic skull bone and the upper membrane of the median canal. It is filled with perilymp..

Once the food is ingested into the mouth the action of the upper and the lower jaw crushes and grinds the foo..

Biomembranes form physical boundaries between organelles and cytoplasm as well as cell and its surroundings medium. Materials are passed across the biomembrane by various processes. The membrane allows only selected particles based on their size, shape, texture etc, to move in and out. He..