Question

The volume of $50g$ of a substance is $20{cm}^3$. If the density of water is $1{gcm}^{-3}$.Find the density of the substance and interpret whether the substance will sink or float?

• A. $2.5g/c{m}^3$, Substance will sink
• B. $2.5g/c{m}^3$, Substance will float
• C. $1.5g/c{m}^3$, Substance will neither sink nor float
• D. $1.5g/c{m}^3$, Substance will float inside water

Answer 1

Answer: (A)

$2.5g/c{m}^3$, Substance will sink

Given : Density of water $\rho =1$ $g/c{m}^3$

Density of the substance ${\rho }^{\prime }=\frac{Mass}{Volume}$

${\rho }^{\prime }=\frac{50}{20}=2.5$ $g/c{m}^3$

As the density of the substance is greater than that of water, thus it will sink.