Three liquids of densities p1, p2 and p3 (with p1 > p2 > p3), having the same value of surface tension t, rise to the same height in three identical capillaries. The angles of contact θ1, θ2, and θ3, obey.
Answers
Answered by
63
formula of height of liquid in capillary tube is given by,
where, T is surface tension, is angle of contact , is density and r is radius of capillary tube.
according to question,
T = constant [ same surface tension ]
r = constant [ identical capillaries ]
h = constant [ same height ]
g always remains constant..
so,
here given,
so,
as we know, cosine is decreasing function within 0 to π/2.
so,
and it is also written as
Similar questions