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NEET Sample Paper NEET Sample Test Paper-27

  • question_answer
    The viscous force on a small sphere of radius R. moving in a fluid is directly proportional to:

    A)  \[{{R}^{2}}\]                     

    B)  R

    C)  \[\frac{2}{R}\]                      

    D)  \[\frac{1}{{{R}^{2}}}\]

    Correct Answer: B

    Solution :

    From the formula, \[F=6\pi \eta RV\] Clearly,           \[F\propto R\]


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