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#3
11th May 2018, 03:09 PM
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| Re: JEE Advanced Test Papers
The previous year question paper for preparation JEE (Joint Entrance Examination) Advanced is as follows: 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 a 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] The 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 A stationary source emits sound of frequency f0 = 492 Hz. The sound is reflected by a large car approaching the source with a speed of 2 ms!!. The reflected signal is received by the source and superposed with the original. What will be the beat frequency of the resulting signal in Hz? (Given that the speed of sound in air is 330 ms!! and the car reflects the sound at the frequency it has received). In which case will the particle move in a straight line with constant velocity? [A] (III) (ii) (R) [B] (IV) (i) (S) [C] (III) (iii) (P) [D] (II) (iii) (S) In which case will the particle describe a helical path with axis along the positive direction? [A] (IV) (i) (S) [B] (II) (ii) (R) [C] (III) (iii) (P) [D] (IV) (ii) (R) JEE Advanced Test Question Paper     |