Q.

The length of a rod is (11.05±0.05)cm. What will be the length of rod when two rods are joined in series ?

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a

(22.1±0.05)cm

b

(22. 1±0.1)cm

c

(22.10±0.05)cm

d

(22.10±0.10)cm

answer is D.

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Detailed Solution

In the sum or difference of measurements, we do not retain significant digits in those places after the decimal in which there were no significant digits in any one of the original values.
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