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8th Class Science Force and Pressure Question Bank Force and Pressure

  • question_answer
    DIRECTIONS: Read the passage given below and answer the questions that/allow. Passage Pressure is defined as the force exerted over a unit of area. \[\text{Pressure}\,\text{=}\frac{\text{force}}{\text{area}}\] Place a book on a bathroom scale and, whether you place it on its back, on its side, or balanced on a corner, it still exerts the same force. The weight reading is the same. Now balance the book on the palm of your hand and you sense a difference - the pressure of the book depends on the area over which the force is distributed. If a force of 20N is applied on the surface of area 0.1 m2 then pressure experienced is

    A) 5N/m2 

    B)          100 N/m2

    C) 200 N/m2        

    D) None of these

    Correct Answer: C

    Solution :

        Pressure\[=\frac{focre}{area}\] \[=\frac{20N}{0.1\,{{m}^{2}}}=200N/{{m}^{2}}\]


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