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8th Class Science Force and Pressure Question Bank Force and Pressure Conceptive Objective Problems

  • question_answer
    If \[20c{{m}^{3}}\] gas at latm is expanded to \[50c{{m}^{3}}\] at constant T, then what is the fmal pressure?

    A)  \[20\times \frac{1}{50}atm\]    

    B)  \[50\times \frac{1}{20}atm\]

    C)  \[\frac{1}{20\times 50}atm\]                    

    D)  None of these          

    Correct Answer: A

    Solution :

      \[{{P}_{1}}{{V}_{1}}={{P}_{2}}{{V}_{2}},1\times 20={{P}_{2}}\times 50,\] \[{{P}_{2}}=20\times \frac{1}{50}atm.\]


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