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Force And Pressure

Force And Pressure

21 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is a contact force?
a. Muscular force
b. Electrostatic force
c. Gravitational force

  1. Only a
  2. Only a and b
  3. Only b and c
  4. Only c
  5. Only b
Question 2 Multiple Choice (Single Answer)

Which of the following statements is/are false?
a. In interaction, each object acts in such a way, so as to have an effect on the other object.
b. The direction in which the object is pushed or pulled is called the direction of force.
c. Force has magnitude but no direction.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 3 Multiple Choice (Single Answer)

Which of the following is the SI unit of force?

  1. Newton
  2. Kelvin
  3. Celsius
  4. Kilogram
  5. Pascal
Question 4 Multiple Choice (Single Answer)

Which of the following statements is/ are false?
a. The strength of a force is expressed by its direction.
b. One newton is the force, which can make an object of one kilogram mass to move at a speed of one meter per second.
c. If the magnitude or the direction of the applied force changes, the effect produced by the force also changes.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 5 Multiple Choice (Single Answer)

If the two forces applied to an object act in the same direction, then the resultant force acting on the object will be equal to which of the following?

  1. It will be equal to the difference between the two forces.
  2. It will be equal to the sum of the two forces.
  3. It will be equal to zero.
  4. It will be equal to the product of the two forces.
  5. None of the above
Question 6 Multiple Choice (Single Answer)

Which of the following is/are non-contact forces?
a. Magnetic force
b. Electrostatic force
c. Muscular force
d. Gravitational force

  1. Only c
  2. Only c and d
  3. Only b and c
  4. Only a and c
  5. Only a, b and d
Question 7 Multiple Choice (Single Answer)

Which of the following statements is/are false?
a. The high air pressure produced by the gas molecules on the walls of baloon causes it to expand and get inflated.
b. The pressure exerted by a liquid on the walls of its container increases with the increasing depth.
c. The rise of liquid in a dropper is due to the gravitational force.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 8 Multiple Choice (Single Answer)

Which of the following statements is/are false?
a. A force can move a stationary object.
b. A force can change the speed of a moving object.
c. Force cannot change the direction of a moving object.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 9 Multiple Choice (Single Answer)

If the two forces applied to an object are equal in magnitude and act in opposite directions, then the net forces acting on the object ____________.

  1. will be zero
  2. will be equal to the sum of the two forces
  3. will be equal to the greater of the two forces
  4. will be equal to the product of the two forces
  5. None of the above
Question 10 Multiple Choice (Single Answer)

Which of the following statements is/are false?
a. If the force is applied in the direction of motion of the object, its speed increases.
b. At the higher altitudes, the atmospheric pressure is much more than our blood pressure.
c. The magnetic force between a magnet and an iron object is always that of attraction.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 11 Multiple Choice (Single Answer)

Which of the following is not an example of use of muscular force?

  1. A porter carrying a load on a wheel-barrow.
  2. A boy pushing a cart on the road.
  3. A child riding a bicycle.
  4. A person drawing water from the well.
  5. The stopping of a rolling ball after covering a little distance.
Question 12 Multiple Choice (Single Answer)

On which of the following metals, magnetic force is not exerted by a magnet?
a. Nickel
b. Cobalt
c. Copper

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 13 Multiple Choice (Single Answer)

Which of the following is utilised in reducing air pollution by removing dust, soot and fly-ash particles from the smoke coming out of chimneys of factories?

  1. Gravitational force
  2. Magnetic force
  3. Muscular force
  4. Electrostatic force
  5. Frictional force
Question 14 Multiple Choice (Single Answer)

The pressure produced by a given force does not depend upon:
a. force applied
b. area over which the force acts
c. mass of the object

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 15 Multiple Choice (Single Answer)

Match the following:

 
a. Contact force 1. It is the force exerted by the muscles of the body.
b. Muscular force 2. It is the force, which can be exerted by an object on another object even from a distance, without touching each other.
c. Non-contact force 3. It is a force, which can be exerted by an object on another object only through physical touching.
  1. a - 3, b - 2, c - 1
  2. a - 3, b - 1, c - 2
  3. a - 1, b - 3, c - 2
  4. a - 1, b - 2, c - 3
  5. a - 2, b - 1, c - 3
Question 16 Multiple Choice (Single Answer)

If we drop a stone from a certain height, it falls to the ground. Which of the following force is responsible for making the stone fall to the ground?

  1. Electrostatic force
  2. Muscular force
  3. Magnetic force
  4. Gravitational force
  5. Frictional force
Question 17 Multiple Choice (Single Answer)

Which of the following statements is/are false?
a. Like poles of two magnets attract each other, whereas unlike poles repel each other.
b. The magnetic force exerted by one magnet on the other magnet is a non-contact force.
c. An electrically charged object can exert an electrostatic force on an uncharged object.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 18 Multiple Choice (Single Answer)

Which of the following forces between the Sun and the Earth holds the Earth in its orbit around the Sun?

  1. Magnetic force
  2. Muscular force
  3. Frictional force
  4. Electrostatic force
  5. Gravitational force
Question 19 Multiple Choice (Single Answer)

Which of the following statements is/are false?
a. The pressure exerted by a liquid decreases with the increase in depth inside the liquid.
b. The same force produces less pressure if it acts on a large area but it can produce high pressure if it acts on a smaller area.
c. The SI unit of pressure is pascal.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 20 Multiple Choice (Single Answer)

An equal force 'A' acts on different objects having the surface area given below. In which case, the pressure exerted by the force will be the minimum?

  1. 20 m2
  2. 19 m2
  3. 10 m2
  4. 8 m2
  5. 5 m2
Question 21 Multiple Choice (Single Answer)

Match the following:

 
a. Frictional force 1. It is a force exerted by a magnet.
b. Magnetic force 2. It is the force exerted by an electrically charged object.
c. Electrostatic force 3. It is a force, which always opposes the motion of one body over another body.
  1. a - 3, b - 2, c - 1
  2. a - 3, b - 1, c - 2
  3. a - 1, b - 3, c - 2
  4. a - 1, b - 2, c - 3
  5. a - 2, b - 1, c - 3
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