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Work Power and Energy question

2017 · Shift 1 · Q39
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  5. /2017 · Shift 1 · Q39

Work Power and Energy question

2017 · Shift 1 · Q39

JEE AdvancedPhysicsWork Power and EnergyMultiple correct+4 / −1
A flat plate is moving normal to its plane through a gas under the reaction of a constant force F.F.F. The gas is kept at a very low pressure. The speed of the plate vvv is much less than the average speed u of the gas molecules. Which of the following options is /are true?
  1. A
    The pressure difference between the leading and trailing faces of the plate is proportional to uv
  2. B
    The resistive force experimenced by the plate is proportional to vvv
  3. C
    The plate will continue to move with constant non-zero acceleration, at all times
  4. D
    At a later time the external force FFF balances the resistive force
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