Question

the given figure shows differencev in water level h of two communicating cappilary tubes of diameter 1mm and 1.5 mm respectively . surface tension of water =0.07 N/m and the contact angle between the glass and water i o deg. . the value of h ( in mm )is
ans : 9.52( if figure does not appear , then pls read this , it is a u shaped communicating capilary having 1 water level higher than the other in one of the 2 capillary of this u shaped capillary .)

Answer 1

Answer:

I don't know Bro

Explanation:

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Answer 2

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Solution

Correct option is

A

3.78

The difference in excess pressure is equal to the difference in height.

Hence

2σR

1

−2σR

2

=hdg

Here putting the values of surface tension

=0.07N/m and R

1

=0.5mm and R

2

=0.75mm

density of water =1000kg/m

3

we get h=0.01m