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J & K CET Medical J & K - CET Medical Solved Paper-2011

  • question_answer
    An aeroplane of mass \[3\times 104\text{ }kg\]and total wing area of 120 m z is in a level flight at some height. The difference in pressure between the upper and lower surface of its wings in kpa is \[(g=10\text{ }m/{{S}^{2}})\]

    A)                  2.5                                        

    B)  5            

    C)                  10                                         

    D)  15

    Correct Answer: A

    Solution :

                     Pressure, \[\Delta p=\frac{F}{A}\] \[=\frac{mg}{A}\] \[=\frac{3\times {{10}^{4}}\times 10}{120}\] \[={{10}^{3}}\times 2.5\] \[=2.5\text{ }kPa\]


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