Question

if the length of the rod A is 4.25 +or -0.01cm and that of B is 5.19+or-0.01cm then the rod A is shorter than rod B by. option a)0.94+or- 0.00cm,b)0.94+or-0.02cm,c)1.94+or-0.02cm,d)1.94+or-0.01cm.. plz help​

Answer 1

Answer:

length of the rod A is 4.25-0.01cm=4.24cm

length of B is 5.19 - 0.01cm = 5.18cm

rod A is shorter than rod B by 0.94cm

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Answer 2

Given that,

Length of rod A, $l_A=4.25\pm 0.01\ cm$

Length of rod B, $l_B=5.19\pm 0.01\ cm$

To find:

We need to find rod A is shorter than rod B by how much. It can be done by simple subtraction as:

$l_B-l_A=(5.19\pm 0.01)-(4.25\pm 0.01)\\\\l_B-l_A=0.94\pm 0.00\ cm$

So, the correct option is (a).

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