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  3. WB JEE Medical

WB JEE Medical WB JEE Medical Solved Paper-2015

  • question_answer
    A 20 cm long capillary tube is dipped vertically in water and the liquid rises upto 10 cm. If the entire system is kept is a freely falling platform, the length of the water column in the tube will be

    A)  5 cm   

    B)  10 cm

    C)  15 cm 

    D)  20 cm

    Correct Answer: D

    Solution :

     The height raised by liquid in capillary tube \[h=\frac{2l\cos \theta }{\rho gh}\] As in freely falling platform, a body experiences weightlessness. So, the liquid will rise upto to length of the capillary. i.e. height raised by the liquid will be 20 cm.


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