Question

5by12+(-12by7)=blank+5by12=blank

Answer 1

Step-by-step explanation:

By formula of capillary rise of water

h=

ρgr

2Tcosθ

so, h is inversely proportional to the radius of capillary tube

Hence, h∝

A

1

(sinceA=πr

2

or

A

∝r)

where, h is rise in capillary tube

A is area of capillary tube

Let area of capillary A is A

then areas of capillary B is 4A

Let rise in capillary A is h

let rise in capillary B is x

so,

x

h

=

1/

4A

1/

A

⟹x=

2

h

Therefore capillary rise in B is

2

1

times that of A