The force exerted by a charged body on another charged or uncharged body is known as :
Electric force
Electric field
Electric potential
Electrostatic force
What would be the pressure exerted by a liquid column of height 15 cm on its bottom? g = 10 m/s2, d = 800 kg/m3?
1000 Pa
1200 Pascal
12 pascal
10 Pa
Wheels and ball bearings are used to :
Decrease friction
Decrease force
Increase force
Increase friction
Friction is what type of force?
contact force
Non-contact force
Both 1 and 2
Neither 1 and 2
Choose the correct one from the following.
Friction is less when the surface is hard.
Friction increases with increase in mass.
Friction with increase in mass.
All of these
Pascal is the unit of :
Force
Area
Pressure
Density
Hydraulic devices works on the principal of :
Archimedes principal
Bernoulli's principal
Pascal's law
Newton's law
A surface of area 15 m2 exerts a pressure of 2 pa. Find the force applied?
15 N
10 N
30 N
35 N
Which of the following statement is true?
Pressure of a liquid depends on gravitational force
Pressure of a liquid depends on density
Pressure of a liquid directly proportional to height
Barometer is used to measure :
Velocity
Mass
