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Gravitation question

2021 · Q166
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Gravitation question

2021 · Q166

NEETPhysicsGravitationMCQ+4 / −1
A particle of mass 'm' is projected with a velocity υ\upsilonυ = kVe = (k < 1) from the surface of the earth. (Ve = escape velocity)

The maximum height above the surface reached by the particle is :
  1. A
    Rk21−k2{{R{k^2}} \over {1 - {k^2}}}1−k2Rk2​
  2. B
    R(k1−k2)2R{\left( {{k \over {1 - {k^2}}}} \right)^2}R(1−k2k​)2
  3. C
    R(k1+k2)2R{\left( {{k \over {1 + {k^2}}}} \right)^2}R(1+k2k​)2
  4. D
    R2k1+k{{{R^2}k} \over {1 + k}}1+kR2k​
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