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JEE Main & Advanced Physics Gravitation / गुरुत्वाकर्षण Question Bank Motion of Satellite

  • question_answer
    When a satellite going round the earth in a circular orbit of radius r and speed v loses some of its energy, then r and v change as           [JIPMER 2002; EAMCET 2000]

    A) r and v both with increase

    B)             r and v both will decrease

    C)             r will decrease and v will increase

    D)             r will decrease and v will decrease

    Correct Answer: C

    Solution :

                    \[B.E.=-\frac{GMm}{r}.\] If B.E. decreases then r also decreases and v increases as \[v\propto \frac{1}{\sqrt{r}}\]


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