An object weight 20g in air and 18g when it is immersed in water. Calculate the relative density
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Weight in water = Weight in air [1 - 1/σ]
18 × 10^-3 kg × g = 20 × 10^-3 kg × g [1 - 1/σ]
9/10 = 1 - 1/σ
1/σ = 1/10
σ = 10
Relative density of object is 10
18 × 10^-3 kg × g = 20 × 10^-3 kg × g [1 - 1/σ]
9/10 = 1 - 1/σ
1/σ = 1/10
σ = 10
Relative density of object is 10
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