QJEEM19Phe51e: JEE Main 2019 Physics - Class 11 JEEM19Phe51e Solution: If 'M' is the mass of water that rises in a capillary tube of…

Question

Verified Solution • 2025–26 Session moderate

If 'M' is the mass of water that rises in a capillary tube of radius 'r', then mass of water which will rise in a capillary tube of radius '2r' is :

Accepted Answer

Height of liquid rise in capillary tube

h = \frac{2 T \cos θ_{c}}{ρ r g}

\Rightarrow h \propto \frac{1}{r}

When radius becomes double height become half

∴

h^{^{'}} = \frac{h}{2}

Now, M =

π

r²h ×

ρ

and M^' =

π

(2r)² (h/2) ×

ρ

= 2M

Step-by-Step Verified Solution