The readings in a graduated cylinder are`10 cm^(3)` and` 20 cm^(3)`, respectively, before and after a metal alloy piece of mass 200 g is put in it. Thedensity of the material of the alloy is `"________"`kg `m^(-3)`

Options

A. `2 xx 10^(3)`
B. `2 xx 10^(4)`
C. `2 xx 10^(5)`
D. `2 xx 10^(6)`

Answer

B

Explanation

Volume of the metal `=10cm^3`
`=10 xx 10^(-6) m^(3)=10^(-5) m^(3)`
Mass of the metal =200 g=0.2 kg
Density `=("mass")/("volume")=(2 xx 10^(-1))/(10^(-5))=2 xx 10^(4) kg m^(-3)`