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Q.

The length of a rod is (11.05±0.2)cm. What is the length of the two rods?

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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±0.4)cm

answer is D.

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Detailed Solution

l=l1+l2=11.05+11.05=22.10 cmΔ=Δ1+Δ2=0.2+0.2=0.4 cmHence, (l±Δl)=(22.10±0.4 cm)
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