Question

Two capillary tubes P and Q are dipped in water. The height of water level in capillary P is 2/3 to the height in Q capillary. The ratio of their diameters is

• A. 2 : 3
• B. 3 : 2
• C. 3 : 4
• D. 4 : 3

Answer 1

Answer: (B)

3 : 2

Answer 2

$r \propto \frac { 1 } { h } \Rightarrow \frac { r _ { P } } { r _ { Q } } = \frac { h _ { Q } } { h _ { P } } = \frac { h } { \frac { 2 } { 3 } h } = \frac { 2 } { 3 }$