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Question:

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

1. option 1

2. option 2

3. fsdf

4. option 4

Correct Option: 4

Solution:

this is solution