Question

5. The following observations were take for
determining surface tension of water by
capillary tube method. Diameter of capillar,
D=125x10-2m and rise of water incapillary
h=1.46 x 10-2m.
Taking g=9.80ms-2 and using therelation
T=(rgh/2) x 103Nm"?, what is the possible
error in surface tension T?
(a) 2.4%
(b) 15%
(c) 1.6%
(d)
0.15%​

Answer 1

Answer:

The force of surface tension on a ring situated on the surface of water is 14π×10^-4N. Then the diameter of the ring is (surface tension of water = 70×10^-3 N/m)

a) 5 mm

b) 1 cm

c) 2 cm

d) 4 cm

plz.*solve* & *explain it..*