NEET Sample Paper NEET Sample Test Paper-83

  • question_answer
    A student A does the capillary rise experiment at equator and gets the surface tension value\[{{T}_{A}}\]. Another student does the same experiment in same conditions at poles and gets the surface tension value\[{{T}_{B}}\].

    A)  \[{{T}_{A}}>{{T}_{B}}\]                  

    B)  \[{{T}_{A}}<{{T}_{B}}\]

    C)  \[{{T}_{A}}={{T}_{B}}\]                  

    D)  None of these

    Correct Answer: B

    Solution :

    As, \[T=\frac{rh\rho g}{2\,\cos \,\theta }\] and \[{{g}_{at\,\,equator}}\,=\,\,{{g}_{at\,\,poles}}\] \[\Rightarrow \,\,\,\,\,\,{{T}_{equator}}<{{T}_{pole}}\] \[\Rightarrow \,\,\,\,\,\,{{T}_{A}}<{{T}_{B}}\]


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