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The initial and final temperatures are recorded by using a thermometer as (40.6±0.4)0 C and(78.4±0.2)0 C. The rise in temperature is

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a

(37.8±0.4)

b

(378± 0.6)

c

(37.8± 0.6)

d

(37.8± 0.2)

answer is C.

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Detailed Solution

t=t2-t1 =78.4−40.6 =37.8 Δt=Δt1+Δt2=0.4+0.2=0.6 t±Δt=(37.8±0.6)0C

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