Force and Pressure

the action of push or pull which makes body move or brings them to rest is known as
1. force
2. pressure
3. thrust
4. newton's 2nd law
force changes or tends to change the
1. state of body
2. direction of moving body
3. shape of body
4. all of these
the direction of force is same in the direction of
1. push
2. pull
3. both push and pull
4. any direction
which of the following is a vector quantity?
1. force
2. thrust
3. pressure
4. both force and thrust
vector quantity has
1. magnitude only
2. direction only
3. magnitude as well as direction
4. cant be determined
force depends on which of the following factors
1. magnitude of force
2. area over which force acts
3. direction of force
4. all of these
unit of force is
1. newton
2. pascal
3. decible
4. metre
force acting perpendicularly on any given surface area of body is called
1. thrust
2. pressure
3. friction
4. none of these
which of the following quantity has unit newton
1. force
2. thrust
3. pressure
4. both force and thrust
5. both force and pressure
effect of force can be measured by physical quantity called
1. thrust
2. pressure
3. friction
4. none of these
effect of pressure can be increased by
1. increasing thrust or increasing area of contact
2. increasing thrust or decreasing area of contact
3. decreasing thrust or increasing area of contact
4. decreasing thrust or decreasing area of contact
the amount of force of air that acts downward on unit surface area is called
1. pressure
2. atmospheric pressure
3. thrust
4. atmospheric thrust
atmospheric pressure is measured by device named
1. barometer
2. centimeter
3. speedometer
4. pascalmeter
value of atmospheric pressure at sea level is
1. 750 mm
2. 760 mm
3. 770 mm
4. 780 mm
the pressure exerted by the mercury column of height 76cm in the barometer is called
1. 1 atm
2. 1 pascal
3. 1 newton
4. 1 mm
An upward force is exerted by water on a floating or a partly submerged body is called
1. frictional force
2. buoyant force
3. atmospheric pressure
4. thrust
buoyant force is exerted by
1. solids only
2. liquid only
3. gas only
4. fluids
If the weight of the object is less than the upward force, then the object will
1. float
2. sink
3. submerged
4. cant determine
the force acting on unit area of surface, on which the liquid is placed is called
1. static pressure of liquid
2. dynamic pressure of liquid
3. surface tension
4. none of these
instrument used to measure the difference in liquid pressure is called
1. barometer
2. nanometer
3. manometer
4. centimeter