Tag: physics

Questions Related to physics

When a force is applied on a rigid object

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

  1. It changes the inter spacing between its constituent particles.

  2. It changes the dimension of the object

  3. It only causes motion in it

  4. All

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Correct Option: C
Explanation:

A force when applied on a rigid object does not change the inter spacing between its constituent particles and therefore it does not change the dimension of the object.,but cause only motion in it.

If two bodies do not interact

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

  1. still a force can be applied

  2. no force can be applied

  3. contact force can be applied

  4. non-contact force can be applied

Show answer
Correct Option: B
Explanation:
If two bodies do not interact there won't be any force between them as
interaction is must for having any sort of force between two bodies.

Mark the incorrect option:

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

  1. A force always make an object to move

  2. A force has both magnitude and direction

  3. A force can be represented by an arrow

  4. Force is a vector quantity

Show answer
Correct Option: A
Explanation:

We are to remember that force does not always make an object to move. For example,we may push a large piece of rock without displacing it from its position.We may even push a wall without any success. And, on the other had, we may apply force on a dough by our fingers to change its shape and size. So, a force does not always make an object to move, it may be used to change the shape and size of an object as well.

Force is a vector quantity because it has both magnitude and direction.

Fill in the blank.

When a force is applied on a soft object,it changes the_________ of the object. 

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

  1. Shape

  2. Size

  3. Direction of force

  4. Both a and b

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Correct Option: D
Explanation:

Force can change the shape and size of an object-when a force is applied on a soft object, it changes the shape and size of the object.

When a spring is pulled :

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

  1. shape of the spring changes

  2. size of the spring changes

  3. size of the spring doesn't change 

  4. both a and b

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Correct Option: D
Explanation:

When a spring is pulled, it's shape and size changes. When a force is applied on a soft object,it changes the shape and size of the object.

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

  1. Force can be seen

  2. When an inflated balloon is pressed between the two hands,only its shape changes

  3. Force is a push,pull or squeeze

  4. All

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Correct Option: C
Explanation:

Force cannot be seen.we can 'see' or 'feel' the force through its effects.when an inflated balloon is pressed between the two hands,its shape and size changes.

Force acting on a body is a push,pull or a squeeze.

As longer the interaction between two objects exist

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

  1. The force remains

  2. The force stops after the initial interaction

  3. Both a and b

  4. The force remains for a specific time interval 

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Correct Option: A
Explanation:

A force is a push or pull on an object. This push or pull comes from the objects interacting with one another and only from such interactions. Once the interaction stops, there is no longer any force.

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

  1. A force can make stationary object move.

  2. A force can stop a moving object

  3. A force can increase the speed of a moving object

  4. All

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Correct Option: D
Explanation:

Force acting on a body can change its state of rest or of motion.

A force can make a stationary object move-when you kick a stationary football,it moves.

A force can stop a moving object-when a force is applied on a moving object in the direction of motion,its speed increases.

 Fill in the blank.

Interaction of one object with ________ results in a force.

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

  1. Itself

  2. Another object

  3. Both

  4. May itself and may be another object 

Show answer
Correct Option: B
Explanation:

$Answer:-$ B

Best example we can take into account is gravitational force.
Gravitation or gravity, is a natural phenomenon by which all things with mass are brought toward  one another, including planets, stars and galaxies.
And for that attraction force is responsible known as gravitational force.

Which of the following is/are correct

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

  1. At least two objects must interact for a force to come into play.

  2. Interaction of one object with another object results in a force between the two objects.

  3. Interacting forces may be push or pull

  4. All

Show answer
Correct Option: D
Explanation:

We can infer that at least two objects must interact for a force to come into play.Thus,an interaction of one object with another object results in a force between the two objects.