Question : Which among the following is responsible for the rotation of the plane of oscillation of Foucault's pendulum?
Option 1: Centripetal force
Option 2: Viscous drag of air
Option 3: Centrifugal force
Option 4: Coriolis force
Correct Answer: Coriolis force
Solution : The correct answer is Coriolis force.
Coriolis force is responsible for the rotation of the plane of oscillation of Foucault’s pendulum. It is an experiment which was demonstrated in 1851 by a French scientist J. B. Leon Foucault. Coriolis force is due to the rotation of the Earth around its axis. The Earth rotates faster at the equator than it does at the poles.
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