1. Suppose I give you an object that I say is made out of gold (density of 19.3 g/cm3). The object has a volume of 10mL and has a mass of 180 grams. Am I lying if say it is made out of solid gold (Just don't write yes or no, explain.)
2. What is least count of an instrument? What is the least count of a Vernier Caliper?
3. What condition on density is required for a body to float? Steel is much denser than water. So how does a ship make of steel float in water?