1.

If water rises in a capillary tube upto 3 cm. What is the diameter of capillary tube (Surface tension of water\[=\text{ }7.2\text{ }\times {{10}^{2}}N/m\])             [RPMT 2002]

A. \[9.6\times {{10}^{4}}m\]
B.            \[9.6\times {{10}^{3}}m\]
C.            \[9.6\times {{10}^{2}}m\]
D.            \[9.6\times {{10}^{1}}m\]
Answer» B.            \[9.6\times {{10}^{3}}m\]


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