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MHT CET202415 May 2024Evening ShiftPhysicsGravitationActual

The density of a new planet is twice that of earth. The acceleration due to gravity at the surface of the planet is equal to that at the surface of earth. If R is the radius of earth, then radius of the planet would be

Options

  1. A4 R
  2. BR / 2
  3. CR 4
  4. D2 R

Correct answer

B. R / 2

Step-by-step solution

aligned & Given, _ p =2 _ e , g _ p = g _ e & g = 4 3 GR aligned array ll & R_p R_e = ( g_p g_e ) ( _e _p )=(1) ( 1 2 ) & R_p= R_e 2 = R 2 array

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