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Q.

If the absolute errors in two physical quantities A and B are a and b respectively, then the absolute error in the value of A-B is

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a

b-a

b

a+b

c

a-b

d

a±b

answer is D.

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Detailed Solution

 If Z=AB; ΔZ=ΔA+ΔB (Max possible error) 
ΔZ=a+b

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If the absolute errors in two physical quantities A and B are a and b respectively, then the absolute error in the value of A-B is