Question

In a surface tension experiment, with a capillary tube, water rises upto a height of $5cm$ , in the capillary tube. If the same experiment is repeated in an artificial satellite, revolving round the earth, then the water will rise in the capillary tube upto a height equal to

• A. $3cm$
• B. $6cm$
• C. $9.8cm$
• D. Full length of the capillary tube

Answer 1

Answer: (D)

Full length of the capillary tube

The rise in the capillary tube is given as,

$h=\frac{2T}{r\rho g}$

Since, the gravity is negligibly small at the orbit where the satellite is revolving around the earth so the value of acceleration due to gravity will be negligible and capillary rise will be very high.

So, the full length of the capillary tube is the right answer.