Advertisements
Advertisements
प्रश्न
Define the term ‘pressure’ and state its unit.
Advertisements
उत्तर
PRESSURE : “The thrust on unit area of the surface is called PRESSURE.”
Pressure = Thrust / Area
S.I. unit = Nm-2
APPEARS IN
संबंधित प्रश्न
The unit of pressure is
A gum bottle rests on its base. If it is placed upside down, how does the thrust change?
A boy weighing 60 kgf stands on platform of dimensions 2.5 cm x 0.5 cm. What pressure in pascal does he exert?
Multiple Choice Question.
A hydraulic lift is designed to lift heavy objects of maximum mass 2000 kg. The area of cross-section of piston carrying the load is 2.25 × 10-2 m2. What is the maximum pressure the smaller piston would have to bear?
Find the pressure 200m below the surface of the ocean if pressure on the free surface of liquid is one atmosphere. (Density of seawater = 1060 kg/m3)
Explain the variation of the pressure exerted by liquid with respect to the following factors.
- Amount of liquid
- Depth
- Shape and size of the container
Give reasons why:
a single nail pricking the body is painful when compared to lying on a bed of nails.
Give reasons why:
cutting edges of knives and axes are sharpened.
It is easy to compress a gas whereas liquids are ______.
The net force in a particular direction is called ______.
