Water rises to a height of `2 cm` in a capillary tube. If the tube is tilted `60^@` from the vertical, water will rise in the tube to a length of

Options

A. 4.0 cm
B. 2.0 cm
C. 1.0 cm
D. water will not rise at all

Answer

A

Explanation

Since water rises to height of 2 cm in a capillary

If tube is at `60^(@)`, in this case height must be equal to
`h = 2 cm rArr cos 60^(@) = (h)/(l)`
`:. lamda = (h)/(cos 60^(@))=(2)/(1//2)=4 cm`