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The mass and volume of a body are 4.237 g and `2.5cm^3,` respectively. The density of the meterial of the body in correct significant figures isA. `1.6948gcm^(-3)`B. `1.69gcm^(-3)`C. `1.7gcm^(-3)`D. `1.695gcm^(-3)` |
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Answer» Correct Answer - C Here, mass, `m=4.237g` Volume, `V=2.5cm^(3)` Density `rho=("mass")/("Volume")=(4.237g)/(2.5cm^(3))=1.6948cm^(-3)` As mass has 4 significant figures and volume has 2 significant figures, therefore, as per rule, density will have only two significant figures. Rounding off to two significant figures, we get `rho=1.7g" "cm^(-3)` |
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