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NEET
Exam
NEET
Subject
Physics
Chapter
Gravitation

NEET · Physics · Gravitation

Match the following columns. Codes array llll A & B & C & D array

Match the following columns. Codes ABCD\begin{array}{llll}A & B & C & D\end{array}

Options

  1. AIV II I III
  2. BIII I IV II
  3. CII II III III
  4. DNone of these

Correct answer

D. None of these

Step-by-step solution

The potential energy of satellite at distance rr from earth is U=−GMmrU=\frac{-G M m}{r} So, it is always negative as it is due to attractive gravitation force of earth's field. The kinetic energy of satellite is K=GMm2rK=\frac{G M m}{2 r} It is always positive. The total energy of satellite is TE=K+U=GMm2r−GMmr=−GMm2r\begin{aligned} \mathrm{TE} & =K+U=\frac{G M m}{2 r}-\frac{G M m}{r} \\ & =-\frac{G M m}{2 r} \end{aligned} which is negative. The gravitation potential energy of satellite at infinity is U=−GMmr=−GMm∞=0U=-\frac{G M m}{r}=-\frac{G M m}{\infty}=0 So, the correct match is A→\mathrm{A} \rightarrow\mathrm{II},B→, \mathrm{B} \rightarrow\mathrm{II},C→, \mathrm{C} \rightarrow\mathrm{I},D→, \mathrm{D} \rightarrow III. No option is correct.
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