The following observations were taken for determining surface tension $T$ of water by capillary method:

diameter of capillary, $D = 1.25 \times 10^{- 2} m$

rise of water, $h = 1.45 \times 10^{- 2} m$

Using $g = 9.80 m s^{- 2}$ and the simplified relation $T = \frac{r h g}{2} \times 10^{3} N m^{- 1}$ the possible error in surface tension is closest to:

Question

The following observations were taken for determining surface tension

T

of water by capillary method:

diameter of capillary,

D = 1.25 \times 10^{- 2} m

rise of water,

h = 1.45 \times 10^{- 2} m

Using

g = 9.80 m s^{- 2}

and the simplified relation

T = \frac{r h g}{2} \times 10^{3} N m^{- 1}

the possible error in surface tension is closest to:

Aicharya · Accepted Answer

Percentage error in surface tension &#8710; T T = &#8710; r r + &#8710; h h &#8710; r r = &#8710; D D = 0.01 1 .25 &#8710; h h = 0.01 1.45 &#8756; % &#160; e r r o r &#160; i n &#160; T = &#8710; T T &#215; 100 = 0.01 1.25 + 0.01 1.45 &#215; 100 = 1.489 &#8776; 1.5

The following observations were taken for determining surface tension T of water by capillary method:…

Solution