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1. 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?


A : The pressure difference between the leading and trailing faces of the plate is proportional to uv

B : resistive force experienced by the plate is proportional to v

C : The plate will continue to move with constant non-zero acceleration, at all times

D : At a later time the external force F balances the resistive force

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