The relative density of the material of a body is the ratio of its weight in air and the loss of its weight in water by using a spring balance, the weight of the body in air is measured to be 5.00 ± 0.05 N. The weight of the body in water is measured to be 4.00 ± 0.05 N.(i) The maximum possible percentage error in relative density is –
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Ans.
(i)
Sol. Relative density = 
% error in R.D. = 
× 100
= 
×100 + 
× 100
= 
×100 + 
× 100 = 11%
(ii)
Sol. 
± 11% = 5.00 ± 11%
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