## In This post you will get answer of Q.

Assertion : When height of a tube is less than liquid rise in the capillary tube, the liquid does not overflowReason: Product of radius of meniscus and height of liquid in the capillary tube always remain constant

Solution:

## Both assertion and reason are true and reason is the correct explanation of assertion

From equation $hR=frac{2S}{rho g} =$ a finite constant

Hence when the tube is of insufficient length, radius of curvature of the liquid meniscus increases, so as to maintain the product $hR$ a finite constant, i.e., as $h$ decreases, $R$ increases and the liquid meniscus becomes more and more flat, but the liquid does not overflow