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9.1 , fluid mechanics — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics9.1 , fluid mechanics1 Mark
MCQ
A large ship can float but a steel needle sinks because of
  • A
    Viscosity
  • B
    Surface tension
  • C
    Density
  • ✓
    None of these
✓

Answer

Correct option: D.
None of these
d
(d) A large ship can float but a steel needle sinks, this concept is explained by Archimedes principle which states that when a body is fully or partly all submerged in a fluid, a buoyant force from the surrounding fluid acts on the body. The force is directed upward and has a magnitude equal to the weight of the fluid that has been displaced by the body.

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