Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
The graph correctly represents the variation of acceleration due to gravity $(g)$ with radial distance from the centre of the earth (radius of the earth $=R_e$ ) is
PhysicsGravitationTS EAMCETTS EAMCET 2020 (10 Sep Shift 2)
Options:
  • A
  • B
  • C
  • D
Solution:
1805 Upvotes Verified Answer
The correct answer is:
At depth $d$,
$g^{\prime}=g\left(1-\frac{d}{R_e}\right)=g\left(\frac{R_e-d}{R_e}\right)=\frac{g r}{R_e}$
$\Rightarrow g^{\prime} \propto r($ where, $r=$ distance from centre of earth $)$


At height $h$,
$g^{\prime}=g\left(\frac{R_e^2}{\left(R_e+h\right)^2}\right)=\frac{g R_e^2}{r^2} \Rightarrow g^{\prime} \propto \frac{1}{r^2}$
So, correct graph is

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.