A cubical block of wood of specific gravity $0.5$ and a chunk of concrete of specific gravity $2.5$ are fastened together. The ratio of the mass of wood to the mass of concrete which makes the combination to float with its entire volume submerged under water is
  • A$1/5$
  • B$1/3$
  • C$3/5$
  • D$2/5$
Medium
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    A ball rises to surface at a constant velocity in a liquid whose density is $4$ times greater than that of the material of the ball. The ratio of the force of friction acting on the rising ball and its weight is
    View Solution
  • 2
    Two substances of densities ${\rho _1}$ and ${\rho _2}$ are mixed in equal volume and the relative density of mixture is $4$. When they are mixed in equal masses, the relative density of the mixture is $3$. The values of ${\rho _1}$ and ${\rho _2}$ are
    View Solution
  • 3
    A given shaped glass tube having uniform cross section is filled with water and is mounted on a rotatable shaft as shown in figure. If the tube is rotated with a constant angular velocity $\omega $then
    View Solution
  • 4
    A rectangular box has water in it. It is being pulled to the right with an acceleration $a$. Which of the following options shows the correct shape of water surface on it ?
    View Solution
  • 5
    Air is blown through a hole on a closed pipe containing liquid. Then the pressure will
    View Solution
  • 6
    The Working of an atomizer depends upon
    View Solution
  • 7
    A siphon in use is demonstrated in the following figure. The density of the liquid flowing in siphon is $ 1.5 gm/cc. $ The pressure difference between the point $P$  and $S$ will be
    View Solution
  • 8
    The relative velocity of two consecutive layers is 8 cm/s. If the perpendicular distance between the layers is $0.1\, cm$, then the velocity gradient will be ......... $sec^{-1}$
    View Solution
  • 9
    A cube of ice floats partly in water and partly in kerosene oil. The radio of volume of ice immersed in water to that in kerosene oil (specific gravity of Kerosene oil $=0.8$, specific gravity of ice $=0.9$ )
    View Solution
  • 10
    The terminal velocity of a copper ball of radius $2.0 \;mm$ falling through a tank of oll at $20\,^{\circ} C$ is $6.5 \;cm s ^{-1} .$ Compute the viscosity of the oil at $20\,^{\circ} C .$ Density of oil is $1.5 \times 10^{3} \;kg m ^{-3},$ density of copper is $8.9 \times 10^{3} \;kg m ^{-3}$
    View Solution