Class 8 Force & Pressure

When two forces act in opposite directions, then net force acting is the

• sum of two forces

• difference between two forces

• both of these

• none of these

The force exerted by a charged body on another charged or uncharged body is called

• gravitational force

• electrostatic force

• non-contact force

• contact force

Two boys A and B are applying force on a block. If the block moves towards the boy A, which one of the following statements is correct?

• Magnitude of force applied by A is greater than that of B.

• Magnitude of force applied by A is smaller than that of B.

• Net force on the block is towards B.

• Magnitude of force applied by A is equal to that of B.

Opening a door is an example of a

• (a) contact force

• (b) non-contact force

• (c) muscular force

• both (a) and (c)

Force changes the

• motion of body

• speed of body

• shape of body

• all of these

The pressure which is exerted by air around us is known as

• force

• atmospheric pressure

• muscular force

• friction

Force acting on per unit area is called

• non-contact forces

• contact forces

• force

• pressure

The force exerted by the earth to pull the object towards itself is called

• electrostatic force

• gravitational force

• muscular force

• contact force

The strength of force is expressed by its

• weight

• mass

• magnitude

• longitudinal force

A container is filled with water as shown in the given figure. Which of the following statements is correct about pressure of water?

• Pressure at A > Pressure at B > Pressure at C

• Pressure at A = Pressure at B = Pressure at C

• Pressure at A < Pressure at B > Pressure at C

• Pressure at A < Pressure at B < Pressure at C