9th Class Science Gravitation and Floatation Question Bank Gravitation IIT JEE Objective Problems

  • question_answer
    Acceleration due to gravity is g on the surface of the Earth. Then the value of the acceleration due to gravity at a height of 32 km above Earth's surface is (Radius of the Earth = 6400 km)

    A)  0.99 g                  

    B)  0.8 g   

    C)  1.01 g                                  

    D)  0.9 g

    Correct Answer: A

    Solution :

      \[{{g}^{1}}=g\left( 1-\frac{2h}{R} \right)=g\left( 1-\frac{2\times 32}{6400} \right)\]          


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