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. ` 4h `

Answer

B

Explanation

` h = (2 T cos theta )/( r rho g ) , A = pi r ^2 , 4 A = pi (r ' ) ^2 rArr r ' = 2r , h ' = (2 T cos theta )/ ((2r) rho g ) = ((h)/(2)) `