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NEET Sample Paper NEET Sample Test Paper-64

  • question_answer
    A block can slide on a smooth inclined plane of inclination \[\theta \] kept on the floor of a lift. When the lift is descending with a retardation a, the acceleration of the block relative to the incline is

    A) \[\left( g+a \right)\,\sin \,\theta ~\]           

    B) \[\left( g-a \right)\]

    C) \[g\,\,sin\,\,\theta \]                     

    D) \[\left( g-a \right)\text{ }sin\,\theta \]

    Correct Answer: A

    Solution :

    Acceleration of block in a stationary lit\[=\,\,g\,\,\sin \,\theta \]. If lift is descending with acceleration then it will be \[\left( g - a \right)\,\,sin\,\theta \], but in the problem acceleration =-a (retardation)


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