EASY
Earn 100

In Millikan's oil drop experiment a drop of charge and radius is kept constant between two plates of potential difference of . Then charge on other drop of radius which is kept constant with a potential difference of is
(a)
(b)
(c)
(d)

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Important Questions on Viscosity and Surface Tension
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A small spherical body of radius and density moves with the terminal velocity in a fluid of coefficient of viscosity and density What will be the net force on the body?

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A raindrop with radius falls from a cloud at a height above the ground. Assume that the drop is spherical throughout its fall and the force of buoyance may be neglected, then the terminal speed attained by the raindrop is : [Density of water and Density of air Coefficient of viscosity of air

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