WB JEE 2016 | Properties of Matter Question 28 | Physics

WB JEE 2016

MCQ (More than One Correct Answer)

-0

A drop of water detaches itself from the exit of a tap when ($$\sigma$$ = surface tension of water, $$\rho$$ = density of water, R = radius of the tap exit, r = radius of the drop)

$$r > {\left( {{3 \over 2}{{R\sigma } \over {\rho g}}} \right)^{1/3}}$$

$$r = {2 \over 3}{\sigma \over {\rho g}}$$

$${{2\sigma } \over r}$$ > atmospheric pressure

$$r > {\left( {{2 \over 3}{{R\sigma } \over {\rho g}}} \right)^{2/3}}$$

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