Question 8
Density and UpthrustIf the relative density of a metal is 19, what will be the mass of 20 cm3 of the metal when immersed in water?
- A.380 g
- B.400 g
- C.360 g
- D.39 g
- E.180 g
Show the answer and explanation
Answer: A (380 g)
Explanation
Mass does not change when a body is put in water. Mass = relative density × volume (g/cm³) = 19 × 20 = 380 g; immersion only reduces its apparent weight.