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JEE Main & Advanced AIEEE Solved Paper-2011

  • question_answer
    A thin horizontal circular disc is rotating about a vertical axis passing through its centre. An insect is at rest at a point near the rim of the disc. The insect now moves along a diameter of the disc to reach its other end. During the journey of the insect the angular speed of the disc   AIEEE  Solved  Paper-2011

    A) First increase and then decrease

    B) Remains unchanged

    C) Continuously decreases

    D) Continuously increases

    Correct Answer: A

    Solution :

                 \[L=I\omega =\] Constant I first decreases, then increases. \[\Rightarrow \omega \] first increases and then decreases


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