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J & K CET Engineering J and K - CET Engineering Solved Paper-2012

  • question_answer
    A rocket is fired from inside a deep mine, so as to escape the earth's gravitational field. The minimum velocity to be rocket is

    A)  exactly the same as the escape velocity of fire from the earth's surface

    B)  a little more than the escape velocity of fire from the earth's surface

    C)  a little less than the escape velocity of fire from the earth's surface

    D)  infinity

    Correct Answer: B

    Solution :

     a little more than the escape velocity of fire from the earth?s surface


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