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     EduGorilla 
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    A flat plate is moving normal to its plane through a gas under the action of a constant force F. The gas is kept at very low pressure. The speed of the plate v is much less than the average speed u of the gas molecules. Which of the following options is/are true?

    Options :-

    1. The pressure difference between the leading and trailing faces of the plate is proportional to uv.
    2. At a later time, the external force F balances the resistive force.
    3. The resistive force experienced by the plate is proportional to v.
    4. The plate will continue to move with constant non-zero acceleration at all times.
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