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JEE Main & Advanced Physics Gravitation / गुरुत्वाकर्षण Question Bank Acceleration Due to Gravity

  • question_answer
    The height of the point vertically above the earth?s surface, at which acceleration due to gravity becomes 1% of its value at the surface is (Radius of the earth = R) [EAMCET (Engg.) 2000]

    A) 8 R      

    B)             9 R

    C)             10 R    

    D)             20 R

    Correct Answer: B

    Solution :

                    \[\frac{{{g}'}}{g}=\,{{\left( \frac{R}{R+h} \right)}^{2}}\Rightarrow \frac{1}{100}\,=\,{{\left( \frac{R}{R+h} \right)}^{2}}\Rightarrow h=9R\]


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