MHT CET 2022 Physics question
Water rises to a height of 20 mm in a capillary tube of cross-sectional area 'A'. If the area of cross-section of the tube is made , then water will rise to a higher of
Answer: (C)
Solution
The capillary rise is , so . The cross-sectional area is , so . When the area becomes , the radius becomes , and the rise doubles: $h'=2h=2×20\
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