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Rigid body is the body that ______.
1. do not deformed under an external force.
2. can be deformed under an external force.
3. can not be deformed but distance between any two points in it can be changed
4. None of the above

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Correct Answer - Option 1 : do not deformed under an external force.

CONCEPT:

  • Rigid body: A system of particles that has a finite size and does not get deformed when an external force is applied.
    • In a rigid body, the distance between any two particles of an ideal rigid body does not change even when it is under the influence of external forces.

EXPLANATION:

  • Option 1 and 2: Rigid body is a body that does not deform under the influence of external force.
    • So the option 1 is a correct statement and option 2 is not a correct statement.
  • Option 3: The distance between two points in a rigid body does not change.
    • So this is an incorrect statement.
  • Hence the correct answer is option 1.

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