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Q.

A piston of cross-sectional area 100cm2  is  used in a hydraulic press to exert a force of 107  dyne  on water. The cross-sectional area of the other piston which supports a truck of mass 200 kg is

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a

1.96 cm2

b

0.196 m2

c

0.98 m2

d

98 m2

answer is B.

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Detailed Solution

F1A1=F2A2 107×10-5100×10-4=200×9.8A2 A2=0.196m2
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A piston of cross-sectional area 100cm2  is  used in a hydraulic press to exert a force of 107  dyne  on water. The cross-sectional area of the other piston which supports a truck of mass 200 kg is