Question

obtain expression for rise and fall in a capillary tube using pressure difference​

Answer 1

Answer:

P

B

−P

C

=

R

2T

---------(1) &

P

B

=P

O

--------(3)

P

A

=P

o

--------(4)

P

C

+ρgh=P

A

------(2)

From (1),(2)&(3),(4) press are gradient

P

o

−

R

2T

=Pρgh

R

2T

=ρgh⇒h=

Rρg

2T

=

ρgr

2Tcosθ