# Force and pressure Worksheet-4

Force and pressure Worksheet-4

1. When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in dropper. The rise of water in the dropper is due to

A. pressure of water                    B. gravity of the earth

C. Shape of rubber bulb             D. Atmospheric pressure

1. Force is a

A. Pull                                             B. Push

C. Pull and push both                  D. None of these

1. The strength of force is expressed by

A. Weight                                       B. Mass

C. Magnitude                                D. Longitudinal force.

1. The force between two charged bodies is called

A. Muscular force                        B. Gravitational force

C. Magnetic force                         D. Electrostatic force.

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

A. Sum of two forces

B. Difference between two forces

C. Both of these

D. None of these.

1. State of motion is described by

A. Position of rest

B. Position of motion

C. Both by the state of rest or motion

D. None of these.

1. Which of the following is a contact force?

A. Gravitational                            B. Electrostatic

C. Friction                                      D. Magnetic

1. Which of the following is non contact force?

A. Applied                                      B. Gravitational

C. Muscular                                   D. Friction

1. The instrument used to measure pressure is

A. Photometer                               B. Spring balance

C. Manometer                               D. Thermometer

1. The pressure on an object _____ with the increase in depth of sea.

A. Increases                                   B. decreases

C. remains same                           D. none

1. D

2. C

3. C

4. D

5. B

6. C

7. C

8. B

9. C

10. A