# A capillary tube of radius r can support a liquid of weight 6.28 × 10-4 N. if the surface tension of the liquid is 5 × 10-2 N/m. the radius of capillary must be Option 1) Option 2) Option 3) Option 4)

As we discussed in concept

Surface Tension -

It is also defined as force per unit length

- wherein

Option 1)

This option is incorrect.

Option 2)

This option is incorrect.

Option 3)

This option is incorrect.

Option 4)

This option is correct.

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