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

  • question_answer
    The working principle of rocket propulsion is conservation of

    A)  angular momentum

    B)  mass

    C)  linear momentum

    D)  kinetic energy

    Correct Answer: C

    Solution :

    The initial momentum of the rocket on its launching pad is zero. When it is fired from the launching pad, the exhaust gases rush downward at a high speed and to conserve linear momentum, the rocket move upwards.


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