Gksection

General Properties of Matter – General Knowlege

• अरुण कुमार
• Posted on मई 21, 2023

Elasticity

Elasticity is the property of material of a body by virtue of which the body acquires its original shape and size after the removal of deforming force.

• A force, which changes the configuration of a body, is called a deforming force.
• Steel is more elastic than rubber.

Pressure

Pressure is defined as force acting normally on a unit area of the surface

Pressure = Force/Area

Its unit is N/m². It is a scalar quantity.

• Atmospheric pressure is measured by an instrument called the barometer.
• Sudden fall in barometric reading is the indication of strom.
• Slow fall in barometric reading is the indication of rain.
• Slow rise in the barometric reading is indication of clear weather.
• The pressure exerted by liquid column at the surface given as p=hdg. Where d is the density of liquid and h is height of liquid column. In a static liquid at same horizontal level, pressure is same at all points.

Atmospheric pressure decreases with altitude that is why

• It is difficult to cook on the mountain.
• The fountain pen of a passenger leaks in aeroplane.
• Bleeding occurs from the ose.
• It is difficult to breath on higher altitude due to less amount partial pressure of oxygen in air.
• Water starts to boil below 100^o

Check Also:

• Posts not found