If mass of an object is given as (20.0 ± 0.1) kg and volume of object is given as (10.0 ± 0.2) m, then percentage error in its density is :-
a) 10%
b) 2.5%
c) 1%
d) 2%
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Answer:
M=20
v=10
∆M=0.1
∆v=0.2
density=mass/volume
density=20/10=2
Now ∆m/m×100+∆v/v×100
0.1/20×100+0.2/10×100
=3
now 3-2=1 %
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