Question

# If the surface tension of water is $$0.06Nm^{-1}$$ then the capillary rise in a tube of diameter $$1 mm$$ is$$(\theta =0^{o})$$:

A
3.86cm
B
3.12cm
C
2.4cm
D
1.22cm

Solution

## The correct option is C $$2.4 cm$$Diameter $$d = 1mm$$ then,radius $$r=\dfrac { 1 }{ 2 } mm=\dfrac { 1 }{ 2 } \times { 10 }^{ -3 }m$$By using rise in capillary tube formula $$h = \dfrac{2T cos\theta}{\rho gr}$$$$h = \dfrac{2 (0.06) (1)}{1000 \times \dfrac{1}{2} \times 10^{-3} \times 10}$$      (since cos $$0^o = 1$$)$$h = \dfrac{12}{5} \times 10^{-2}$$Therefore, $$h = 2.4 cm$$Option C is correct.Physics

Suggest Corrections

0

Similar questions
View More

People also searched for
View More