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 will be :
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a
8 cm
b
10 cm
c
4 cm
d
20 cm
answer is D.
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Detailed Solution
When tire entire arrangement is put is put in a freely falling elevator, the water rises to complete length of the capillary i.e., 20 cm'