The wire of a Young's modules appartus is elongated by 2 mm when a brick is suspended from .it When the brick is immersed in water the wire contracts by 0.6mm Calculate the density of the brick given that the density of water is `1000 kg m^(-3)`

Options

A. `3333 kgm^(-3)`
B. `4210 kg m^(-3)`
C. `5000 kgm^(-3)`
D. `2000 kgm^(-3)`

Answer

A

Explanation

We have `Deltal prop F`
`(Deltal_(1))/(Deltal_(2))=(F_(1))/(F_(2))=("Weight")/("Weight-upthrust")implies(2)/(1.4)=(Vrhog)/(Vrhog-Vrho_(w)g)`
or Density of brick , `rho=(2)/(0.6)rho_(w)=(2)/(0.6)xx1000=33.33 kg m^(-3)`