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A very narrow capillary tube records a rise of 6 cm when the area of cross section is reduced to one fourth of the former value, water will rise to a height of: A. 3cm B. 6cm C. 15cm D. 12cm

A very narrow capillary tube records a rise of 6 cm when the area of cross section is reduced to one fourth of the former value, water will rise to a height of:
A. 3cm
B. 6cm
C. 15cm
D. 12cm

Grade:12th pass

1 Answers

Aditya Gupta
2075 Points
one year ago
AREA IS REDUCED TO ONE FOURTH RADIUS IS REDUCED T O HALF
since h is proportional to 1/r, therefore h is doubled (since r is proportional to sqrt(area)).
here h= 6cm

therefore   

if h is doubled

then water will rise upto 12 cm.
kindly approve :=)
and plz ask physics ques in physics section rather than zoology

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