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The amount of air present in …

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The amount of air present in a cylinder when a vaccum pump removes 1/4 of the air remaining in the cylinder at a time

    • Posted by Ayush Kumar 6 years, 6 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Sia ? 6 years, 6 months ago

    Let the volume of the cylinder be 16 litres(a1).
    Air removed by pump ={tex}{1 \over 4} \times 16 = 4litres{/tex}
    Air present after first removal = 16-4=12 litres(a2)
    Air again removed  ={tex}{1 \over 4} \times 12 = 3litres{/tex}
    Air present after second removal =12-3 =9 litres(a3)
    The amount of air present in the cyinder is the series
    16,12,9.....
    a2-a1= 12-16  = -4
    a3-a2=9-12= -3
    Since the difference is not same .This is not A.P.

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