A 20cm long capillary tube is dipped in water. The water rises up to 8cm.
A 20cm long capillary tube is dipped in water. The water rises up to 8cm. If the entire arrangement is put in a freely falling elevator the length of water column in the capillary tube will be
(a) 4cm
(b) 20cm
(c) 8cm
(d) 10cm
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(b) : In a freely falling elevator g = 0 Water will rise to the full length i.e., 20cm to tube.
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