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Force and Pressure — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceForce and Pressure1 Mark
MCQ
Contact forces:
  • A
    Are action at a distance forces.
  • B
    Ex$-$gravitational forces.
  • ✓
    Act when the bodies are in physical contact with other.
  • D
    All.
✓

Answer

Correct option: C.
Act when the bodies are in physical contact with other.
A contact force is any force that requires contact to occur. Contact forces are ubiquitous and are responsible for the most visible interactions between macroscopic collections of matter. Pushing a car up a hill or kicking a ball across a room are some of the everyday examples where contact forces are at work.

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