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A liquid rises to a height of 1.8 cm in...

A liquid rises to a height of 1.8 cm in a glass capillary A another glass capillary B having diameter 90% of capillary A is immersed in the same liquid the rise of liquid in capillary B is

A

1.4 cm

B

1.8 cm

C

2.0 cm

D

2.2 cm

Text Solution

Verified by Experts

The correct Answer is:
a
Height of liquid in a capillary tube , `h =(2S cos theta)/(rpg)`
where S= surface tension
p = density of the liquid r= radius of ht capillary tube
or `(1.8 cm)=h_(B)xx9/10`
or `h_(B)=10/9xx1.8 cm =2cm`
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