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If length of stick P  is 3.25 \pm0.01 cm and that of rod Q is 4.19\pm0.01 cm , then the rod Q is longer than stick P by 

Option: 1

0.94 \pm 0.00 cm 


Option: 2

0.94 \pm 0.02 cm 


Option: 3

.094 \pm 0.01 cm 


Option: 4

0.94 \pm 0.005 cm


Answers (1)

best_answer

 X = Q -P 

X = 4.19 -3.25 = 0.94 cm 

\Delta X = \pm (\Delta P+\Delta Q) \pm (0.01+0.01) = \pm 0.02 cm

 

X + \Delta X \Rightarrow (0.94 \pm 0.02 )cm

 

Posted by

jitender.kumar

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