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NEET-XI-Physics

exam-2 year:2016

with Solutions - page 3
Qstn# 123 Prvs-QstnNext-Qstn
  • #123
    Starting from the centre of the earth having radius
    R, the variation of g (acceleration due to gravity) is
    shown by :-
    (1)
    (2)
    (3)
    (4)
    digAnsr:   4
    Ans : (4)
    Sol. e3
    e
    GM
    g r
    R
     
    =   
    for 0 < r  Re &implies; g r
    e
    2
    GM
    g
    r
    = for r ≥ Re &implies; 2
    1g
    r
    