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J & K CET Engineering J and K - CET Engineering Solved Paper-2009

  • question_answer
    A satellite moving round the earth in circular orbit of radius r and speed v suddenly loses some of its energy. Then,

    A)  r will increase and v will decrease

    B)  both r and v will decrease

    C)  both r and v will increase

    D)  r will decrease and v will increase

    Correct Answer: D

    Solution :

    Binding energy \[BE=\frac{-GMm}{r}\]. if be decreases then r also  decreases and v increases as \[v\propto \frac{1}{\sqrt{r}}\]


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