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Gravitation question

2019 · 12 Apr · Shift 2 · Q64
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Gravitation question

2019 · 12 Apr · Shift 2 · Q64

JEE MainPhysicsGravitationMCQ+4 / −1
The ratio of the weights of a body on the Earth’s surface to that on the surface of a planets is 9 : 4. The mass of the planet is 19{1 \over 9}91​ th of that of the Earth. If 'R' is the radius of the Earth, what is the radius of the planet ? (Take the planets to have the same mass density)
  1. A
    R9{R \over 9}9R​
  2. B
    R2{R \over 2}2R​
  3. C
    R3{R \over 3}3R​
  4. D
    R4{R \over 4}4R​
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