If all other factors remain same, which of following will offer highest frictional force .
A
Air
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B
Water
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C
Vacuum
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D
Honey
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Solution
The correct option is D Honey The frictional force on an object moving through a fluid depends on its speed with respect to the fluid. It also depends on the shape of the object and the nature of the fluid. Vacuum doesn't offer any frictional resistance to a body moving through it because of absence of particles. Air offers some resistance, followed by water and honey.