Tag: physics

Questions Related to physics

Identify the action involved in opening or shutting a door.

physics force and types of force introduction to force what is force? concept of force and its unit

  1. Pulling

  2. Pushing

  3. Both a and b

  4. None of the above

Show answer
Correct Option: C
Explanation:

To open or to shut a door the action of pulling and pushing can be applied.

Identify the action involved when a magnet attracts a piece of iron towards it.

physics force and types of force introduction to force what is force? concept of force and its unit

  1. Pushing

  2. Pulling

  3. Flying

  4. Picking

Show answer
Correct Option: B
Explanation:

When a magnet is placed near to the pieces iron, it pulls the pieces of iron towards itself due to it magnetic field action involved is pulling.

Fill in the blanks:

A push or a pull on an object are types of ________.

physics force and types of force introduction to force what is force? concept of force and its unit

  1. pressure

  2. attraction

  3. repulsion

  4. force

Show answer
Correct Option: D
Explanation:

Force is required to move a stationary object, to stop a moving object, etc. The phenomenon required to push or to pull on object is force.

Fill in the blanks:
Force comes into action when ________.

physics force and types of force introduction to force what is force? concept of force and its unit

  1. objects interact.

  2. objects do not interact.

  3. object move.

  4. None of these

Show answer
Correct Option: A
Explanation:

When two body interact with each other then momentum of body will change that change in momentum of the body is effect of mutual force between them.

In which of the following cases, a force is not being applied?

physics force and types of force introduction to force what is force? concept of force and its unit

  1. A man standing behind a stationary car.

  2. A car being pushed by a man.

  3. A man trying to stop a sliding car.

  4. A man standing on a car.

Show answer
Correct Option: A
Explanation:

For pushing a car, a force is required in the direction of motion of the car. 

In trying to stop a sliding car, a force is required against the direction of motion of the car. 
A man standing on the car applies the force of weight on the car.
But, to stand behind a stationary car, no net force needs to be applied in the car.
Option A

A force can be applied only when it is in contact with an object. Which of the following is the category of this type of force?
physics force and types of force introduction to force what is force? concept of force and its unit

  1. Magnetic force

  2. Contact force

  3. Non-contact force

  4. Muscular force

Show answer
Correct Option: B
Explanation:

When a force can be applied by an object on another only if it is in contact with each other, it is called as a contact force. 

What happens when there is no interaction between the objects?

physics force and types of force introduction to force what is force? concept of force and its unit

  1. Force comes in action.

  2. Force does not come in action.

  3. Force may or may not come in action.

  4. None of the above is correct

Show answer
Correct Option: C
Explanation:

There are two types of force 
1) Interactive force: Its effect comes when two objects will come in contact.
2) Non- Interactive force: Its effect will come when an object comes in their respective field strength.

exp:  Charge in an electric field, Mass in gravitation field.
Hence Option C.

A force acts between two bodies if:

physics force and types of force introduction to force what is force? concept of force and its unit

  1. both the bodies are pushing each other.

  2. both the bodies are pulling each other.

  3. either of the two bodies are pushing or pulling the other body.

  4. all of these

Show answer
Correct Option: D
Explanation:

Force is involved in all kinds of push and pull.

Fill in the blanks:

In the game of tug-of-war, both the teams pulls each other. So ________.

physics force and types of force introduction to force what is force? concept of force and its unit

  1. force is applied due to interaction.

  2. force is not applied although there is interaction.

  3. force is applied although there is an interaction.

  4. none of the above.

Show answer
Correct Option: A
Explanation:

Force always comes into action when there will be interaction between the objects, Here both the teams are exerting force on each other through the rope.

A force when applied on a non rigid object

physics force and types of force introduction to force what is force? concept of force and its unit

  1. Does not change the inter spacing between its constituent particles

  2. Do not cause any change in its dimension

  3. Do not produce motion in it

  4. None

Show answer
Correct Option: D
Explanation:

A force when applied on a non rigid object, changes the inter spacing between its constituent particles and therefore causes change in its dimension and can also produce motion in it.