Water rises in a capillary tube to a height h. Choose false statement regarding capillary rise from the following :

Options

A. On the surface of Jupiter, height will be less than h
B. In a lift moving up with constant acceleration height is less than h
C. On the surface of moon the height is more than h
D. In a lift moving down with constant acceleration height is less than h

Answer

D

Explanation

The height (h) to which water rises in a capillary tube is given by
`h=(2Tcostheta)/(rrhog)` where `theta` is angle of contact, r the radius, `rho` the density and g acceleration due to gravity.
When lift moves down with constant acceleration, height is less than h, because effective value of acceleration due to gravity increases hence h decreases.