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  4. A 20 cm long capillary tube is dipped in water. The water rises up to 8 cm. If the entire arrangement is put in a freely falling elevator, the length of water column in the capillary tube will be:

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Q. A $20\, cm$ long capillary tube is dipped in water. The water rises up to $8\, cm$. If the entire arrangement is put in a freely falling elevator, the length of water column in the capillary tube will be:

AIEEEAIEEE 2005Mechanical Properties of Fluids

Solution:

Water fills the tube entirely in gravity less condition.