Pascal is the unit of :
Force
Area
Pressure
Density
A liquid's force is acting over an area of 4m2. If the pressure is 25 N/m2. What is the force?
25 N
6.2 N
100N
6 N
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
Barometer is used to measure :
Velocity
Mass
'Friction can never be entirely eliminated'. This statement is :
False
True
Sometimes true
Sometimes false
What will we need to move an object?
Energy
Strength
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
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
Who invented the Barometer?
Torricelli
Pascal
Faraday
Newton
The Contact force is also termed as :
Magnetic force
Gravitational force
Muscular force
Electrostatic force