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Gravitation question

2004 · Shift 0 · Q165
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Gravitation question

2004 · Shift 0 · Q165

JEE MainPhysicsGravitationMCQ+4 / −1
A satellite of mass mmm revolves around the earth of radius RRR at a height xxx from its surface. If ggg is the acceleration due to gravity on the surface of the earth, the orbital speed of the satellite is
  1. A
    gR2R+x{{g{R^2}} \over {R + x}}R+xgR2​
  2. B
    gRR−x{{gR} \over {R - x}}R−xgR​
  3. C
    gx{gx}gx
  4. D
    (gR2R+x)1/2{\left( {{{g{R^2}} \over {R + x}}} \right)^{1/2}}(R+xgR2​)1/2
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