8th Class Science Force and Pressure Question Bank Force and Pressure IIT JEE Objective Problems

  • question_answer
    A force of 300 N, while acting on an area A, produces a pressure of 1500 Pa. What is the magnitude of A in \[c{{m}^{2}}\]?

    A)  \[1000\text{ }c{{m}^{2}}\]                          

    B)  \[3000\text{ }c{{m}^{2}}\]

    C)  \[4000\text{ }c{{m}^{2}}\]                          

    D)  \[2000\text{ }c{{m}^{2}}\]

    Correct Answer: D

    Solution :

      \[F=300\text{ }N,\text{ }P=1500\text{ }Pa,\text{ }A=?\] We know that \[P=\frac{F}{A}\] \[\Rightarrow \] \[A=\frac{F}{P}=\frac{300}{1500}=\frac{1}{5}{{m}^{2}}\] \[=\frac{1}{5}\times 10,000c{{m}^{2}}=2000c{{m}^{2}}\] The correct answer is D.


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