Force and pressure MCQs with Answers

Question-1. A stretching force of 10 N is applied at one end of a spring balnce and an equal stretching force is applied at the other end at the same time.What will be reading of the balance ?

1. 20 N
2. 0 N
3. 5 N
4. 10 N

Question-2. The weight of air that every square centimetre of any surface carries is

1. 100 kg
2. 1 kg
3. 10 kg
4. 1 gm

Question-3. How much force is required to lift a mass of 100g

1. 1000 N
2. 10 N
3. 1 N
4. 100 N

Question-4. 1 kilogram weight is equal to

1. 0.098 N
2. 98 N
3. 9.8 N
4. 0.98 N

Question-5. A Force Can Produce Many Effects. Choose The Correct Statements

1. All the above
2. A force can change the speed of a moving object.
3. A force can change the direction of a moving object.
4. A force can change the shape and size of an object.

Question-6. The pressure exerted by the air is known as

1. none of these
2. air pressure
3. gas pressure
4. atmospheric pressure

Question-7. Force acts on an object may change

1. Speed
2. All of these
3. Direction
4. Shape

Question-8. External forcees are

1. None of these
2. Always balanced
3. Never balanced
4. May or may not be balanced

Question-9. 1 Newton is a force which produces

1. An acceleration of ms?2 in a body of mass 10g.
2. An acceleration of 1 ms?2 in a body of mass 1g.
3. An acceleration of ms?2 in a body of mass1kg
4. AN acceleration of 1 cms?2 in a body of mass 1kg

Question-10. Pressure is

1. Force / volume on which it acts
2. Area / force on which it acts
3. force / area on which it acts
4. Volume / force on which it acts

Question-11. What is state of motion?

1. None of the options
2. Both by the state of rest or motion
3. Position of rest
4. Position of motion

Question-12. A force applied on a moving body may

1. all of the above
2. bring it to rest
3. increase its speed
4. decrease the speed

Question-13. A force can

1. All of the above
2. Change the direction of a moving body
3. Change the state of rest or uniform motion of a body
4. Change the shape of body

Question-14. A batsman hits the ball for a boundary past the bowler i.e. four runs. The batsman thus

1. Does not change either direction or speed
2. Changes the direction & speed of the ball
3. Does not change the direction but speed only
4. Does not change the speed but direction only

Question-15. If you press an inflated balloon, it deforms due to a type of

1. none of these
2. contact force
3. non-contact force
4. gravitational force

Question-16. The pressure exerted by a liquid

1. is different in different directions at he same depth
2. decreases with depth
3. does not change with depth
4. increases with depth

Question-17. When two forces act in opposite directions, then net force acting two forces

1. None of the options
2. Difference bwteen two factors
3. Sum of two factors
4. Sum of two factors and difference bwteen two factors

Question-18. A force when applied brings change in ?

1. Any of these
2. Direction of motion of the body
3. Speed of moving body
4. Shape of the body

Question-19. If the normal reaction Rbetween the two surfaces in contact is double what happen to the coefficient of friction.

1. Depend on the nature of surface.
2. Double
3. Halved
4. Unchanged

Question-20. SI unit of force is

1. can?t say
2. dyne
3. newton
4. gf.

Question-21. Gravity is the property of

1. none
2. earth above
3. every object
4. moon above

Question-22. The force between two charged bodies is called

1. Magnetic force
2. Electrostatic force
3. Muscular force
4. Gravitational force

Question-23. The force exerted by the earth to pull the object towards itself is called

1. contact force
2. electrostatic force
3. gravitational force
4. muscular force

Question-24. Which Of The Following Is Not A Non-Contact Force?

1. Magnetic force
2. Electrostatic force
3. Gravitational force
4. Frictional force

Question-25. A contact force cannot act through

1. touching with a wooden rod
2. empty space
3. touching
4. touching with a metal rod

Question-26. If In a tug-o-war, when two teams are pulling a rope, and the rope does not move towards any team, it implies that

1. Cannot be explained
2. Equal force is being applied in the same direction
3. Equal Force is being applied in opposite direction
4. No force is applied in any direction

Question-27. A ball rolling on the ground slows down and finally stops. This is because of

1. None of the above
2. Force
3. Less force applied
4. Friction

Question-28. The ratio of force, acting perpendicular to the area, on which it acts is known as

1. Density
2. Force
3. Friction
4. Presuure

Question-29. An example of a non- contact force is

1. Hit a cricket ball for a 6 run
2. Force exerted by us to lift a bucket
3. Push a stationary car
4. Force exerted by magnet

Question-30. Which One Of The Following Forces Is A Contact Force?

1. Electrostatic force
2. Force of gravity
3. Force of friction
4. Magnetic force

Question-31. During Dry Weather, While Combing Hair, Sometimes We Experience Hair Flying Apart. The Force Responsible For This Is

1. Magnetic force.
2. Force of gravity.
3. Electrostatic force.
4. Force of friction.

Question-32. A force that opposes the motion of one surface sliding over another is called

1. ball bearing
2. friction
3. newton
4. lubrication

Question-33. The force responsible for the wearing out of the car tyres is ?

1. Muscular force
2. Frictional force
3. Gravitational force
4. Magnetic force

Question-34. The force you use to stretch a rubber band is ?

1. Muscular force
2. Frictional force
3. Gravitational force
4. Magnetic force

Question-35. The force you will use to collect the iron nails scattered on a sandy ground is ?

1. None of these
2. Frictional force
3. Gravitational force
4. Magnetic force

Question-36. Two objects repel each other. This repulsion could be due to

1. either a magnetic or an electrostatic force
2. frictional force only
3. electrostatic force only
4. magnetic force only

Question-37. A boat comes to rest if we stop rowing it due to

1. none of these
2. gravitation force
3. force of friction
4. muscular force

Question-38. Which is not a non-contact force

1. Frictional
2. Gravitational
3. Eleectrostatic
4. Magnetic

Question-39. Leaves or fruits fall on the ground due to

1. Muscular force
2. Gravitational force
3. Magnetic force
4. Electostatic force

Question-40. The force exerted by a charged body on another char

1. contact force
2. gravitational force
3. electrostatic force
4. non-contact force

Question-41. By decreasing the contact area the pressure

1. none of these
2. is decreased
3. remain same
4. is increased

Question-42. A man walking on the street slips on a banana skin because

1. all of these.
2. it is sticky
3. his foot crushes it
4. at that point there is very little friction

Question-43. A force can be completely described by

1. Neither magnitude nor direction
2. Its magnitude
3. Its direction
4. Its magnitude and direction

Question-44. If a rock is brought from the surface of the moon.

1. Its mass and weight will remain the same
2. Its mass will change
3. Its weight will change, but not mass
4. Both mass and weight will change

Question-45. When an object undergoes acceleraton

1. A force always acts on it
2. Its speed always increases
3. Its velocity always increases
4. It always falls towards the earth

Question-46. Which of the following actions describe pushing force?

1. Opening
2. Kicking
3. Lifting
4. Picking

Question-47. The force exerted by a charged body on another charged or uncharged body is known as

1. Muscular force
2. Magnetic force
3. Gravitational force
4. Electrostatic force

Question-48. The force exerted by one object on another by virtue of their masses is

1. frictional force
2. magnetic force
3. electrostatic force
4. gravitational force

Question-49. The force involved in falling an apple from a tree is

1. Gravitational force
2. Magnetic force
3. Contact force
4. Electrostatic force

Question-50. The strength of force is expressed by?

1. Longitudinal force
2. Magnitude
3. Weight
4. Mass

Question-51. Force exerted by the muscless is known as

1. muscular force
2. mechanical force
3. gravitational force
4. electrostatic force

Question-52. The instrument used of measure atmospheric pressure is

1. none of these
2. mercury barometer
3. manometer
4. pressure meter

Question-53. The SI unit of force is

1. second
2. metre
3. newton
4. pascal

Question-54. The standard unit of force is

1. gram-weight
2. metre/second
3. newton
4. metre/second2

Question-55. A cart being carried by a horse is an example of

1. electrostatic force
2. muscular force
3. mechanical force
4. gravitational force

Question-56. A charged balloon attaches to a wall because of

1. Gravitational force
2. Muscular force
3. Electrostatic force
4. Magnetic force

Question-57. Earth always pulls everything towards it due to

1. electrostatic force
2. muscular force
3. mechanical force
4. gravitational force

Question-58. Pushing a rock from a hill top is an example of

1. electrostatic force
2. muscular force
3. magnetic force
4. frictional force

Question-59. Which of the following is the action-at-distance force ?

1. mechanical force
2. muscular force
3. frictional force
4. magnetic force

Question-60. Magnetic force is

1. None of the options
2. Non contact force
3. Contact force
4. Contact force and non contact force

Question-61. Force acting on per unit area is called

1. pressure
2. non-contact forces
3. contact forces
4. force

Question-62. State of motion is described by

1. None of these
2. Position of rest
3. Position of motion
4. Both by the state of rest or motion

Question-63. A push or pull on an object is called

1. All of the above
2. Pressure
3. Push-pull
4. Force

Question-64. What is force?

1. None of the options
2. Pull and push both
3. Pull
4. Push

Question-65. Gravity is

1. Not a force
2. Repulsive
3. Attraction + Repulsive force
4. Attractive force

Question-66. If two forces act in the opposite directions on an object, the net force acting on it is the

1. Division of the two forces
2. Sum of the two forces
3. difference between the two forces
4. Multiplication of the two forces

Question-67. When a boy weighing 30 kgf sits at one end of a 4 m long see-sew, it gets depreessed at this en

1. The center of gravity of the whole system.
2. The opposite end of the see-sew
3. 1.5 meter distance on the side of the boy
4. 1.5 meter distance on the side opposite to the boy.

Question-68. When a body is stationary

1. The body is in vacuum
2. There is no force acting on it
3. The forces acting on it are not in contact with it.
4. The combination of forces acting on it balance each other

Question-69. A hockey player uses his hockey stick ?

1. All of these
2. To push the ball
3. To pull the ball
4. To change its direction

Question-70. Force is a

1. None of these
2. Vector quantity
3. Scalar quantity
4. Both (A) & (B)

Question-71. A spring balance is used for measuring

1. mass
2. weight
3. speed
4. acceleration

Question-72. A When does a body float on water?

1. When there is friction between the body and the water
2. When no force is acting on it.
3. When the net force acting on the body is zero
4. When there is a gravitational pull.

Question-73. A Pressure Of 10 KPa Acts On An Area Of 0.3 M2. The Force Acting On The Area Will Be

1. 300 N
2. 3000 N
3. 30 N
4. 3 N

Question-74. How may dynes are equal to 1 N ?

1. 103
2. 106
3. 104
4. 105

Question-75. Force of friction always acts on moving objects and its direction shall be

1. Opposite to the direction of motion
2. On any direction
3. Along the direction of motion
4. Perpendicular to the direction of motion