A 20cm long capillary tube is dipped in water. The water rises up to 8cm. If the entire arrangement is put in freely falling elevator, the length of water column in the capillary tube will be 8 cm 6cm 10cm 20cm
Amruta Parab , 9 Years ago
Grade 12
2 Answers
Syed Abdul Rahman
Last Activity: 4 Years ago
here l=20cm
since elevator is falling down so g=0
now since g=0 ,H will be maximum that is eual to length of capillary tube that is 20 cm
so option a
Vikas TU
Last Activity: 4 Years ago
Dear student
On freely falling elevator, the gravitational force on water will be zero therefore, surface tension will not be cancelled by any other force and, hence, water will be raised to full length of capillary tube.
Good Luck
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