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Asked by deepakudgiri29 14th November 2018, 6:59 PM
The equation for capillary rise:-  h×ρ×g = (2×S×cosθ)/a  ..............(1)

where h is height of the liquid rise in capillary tube, ρ is density of liquid, S is surface tension of the liquid,
a is radius of capillary tube and θ is the angle of contact.

If we multiply by πa2 on both side of eqn.(1), left hand side becomes mass m of liquid in the capillary tube.
Hence we rewrite eqn.(1), by multiplying both side wilth πa2 .

Modified equation is, m  = 2×S×cosθ×π×a ....................(2)

ratio of mass mw of water to the mass ml of other liquid is given  by

Hence the answer is :-  1) 5×10-3 kg
Answered by Expert 15th November 2018, 5:37 AM
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