Properties Of Solids And Liquids Question 251
Question: Water rises to a height h in a capillary tube of cross- sectional area A. The height to which water will rise in a capillary tube of cross-sectional area 4A will be
Options:
A) $ h $
B) $ h/2 $
C) $ h/4 $
D) $ h4 $
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ h=\frac{2S\cos \theta }{rpg} $
Cross-sectional area increases four times, which means radius get doubles.
So $ h’=\frac{2S}{2(rpg)}=\frac{h}{2} $
