Question

The rise of a liquid in a capillary tube depends on
(a) the material
(b) the length
(c) the outer radius
(d) the inner radius of the tube

Answer 1

Answer:

(d) the inner radius of the tube.

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Answer 2

The rise of a liquid in a capillary tube depends on

(a) the material

(b) the length

(d) the inner radius of the tube

Explanation:

The rise of a liquid in a capillary tube depends on following

• The material since it depends on the contact angle.
• The length, because if the length is smaller than the length required, the length of the tube shall be up to the length of the tube.
• The tube's inner radius, since the rise is inversely proportionate to the inner radius.  

The option (c) is not true, because there is no role for the outer radius.