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NEET Sample Paper NEET Sample Test Paper-40

  • question_answer
    The acceleration due to gravity is g at a point distant r from the centre of earth of radius R. If r < R, then

    A) \[g\propto r\]

    B) \[g\propto {{r}^{2}}\]

    C) \[g\propto {{r}^{-1}}\]

    D) \[g\propto {{r}^{-2}}\]   

    Correct Answer: A

    Solution :

    Inside the earth \[g'=\frac{4}{3}\pi \rho Gr\]\[\therefore \]\[g\propto r\]


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