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  3. RAJASTHAN PMT

RAJASTHAN PMT Rajasthan - PMT Solved Paper-1996

  • question_answer
    depending upon nature of gas The mechanical work required to increase the unit surface area of a liquid is termed as its surface tension, when the liquid is under

    A)  isothermal condition 

    B)         isobaric condition           

    C)         isomeric condition    

    D)         adiabatic condition

    Correct Answer: A

    Solution :

    Work done \[W=T.\,\Delta A\] But     \[\,\Delta A=1,\,W=T\] If temperature is constant, then surface tension (T) of liquid will be constant,           So, in isothermal conditions, work done is equal to surface tension.                     


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