143363
A vessel contains oil (density $\rho_{1}$ ) over a liquid of density $\rho_{2}$. A homogeneous sphere of volume $V$ floats with half of its volume immersed in the liquid and the other half in oil. The weight of the sphere is
B Weight of floating body $=$ Weight of liquid displaced $\mathrm{W} =\rho_{1} \times \frac{\mathrm{V}}{2} \times \mathrm{g}+\rho_{2} \times \frac{\mathrm{V}}{2} \times \mathrm{g}$ $=\frac{\mathrm{V}\left(\rho_{1}+\rho_{2}\right) \mathrm{g}}{2}$
NDA (I) 2010
Mechanical Properties of Fluids
143306
A spherical object of density $\rho$ is immersed in a fluid of density $\sigma$. The object will move
1 downwards if $\rho>\sigma$
2 downwards if $\sigma>\rho$
3 upwards if $\rho \lt \sigma$
4 upwards if $\rho>\sigma$
Explanation:
A ,c) : If the density of object is greater than that of liquid $(\rho>\sigma)$, then object will move downward, If the density of object is lesser than that of liquid $(\rho \lt $ $\sigma$ ), then object move upward
UPSEE - 2011
Mechanical Properties of Fluids
143318
A ball floats on the surface of water in a container exposed to the atmosphere. When the container is covered and the air is partially removed, then the ball
1 rises
2 gets immersed more in water
3 remains immersed at its former depth
4 may rise or sink.
Explanation:
B When the container is covered and the air is partially removed then the ball gets immersed more in water because the weight of the ball is supported by the boyant force of water and boyant force due to air.
COMEDK 2020
Mechanical Properties of Fluids
143331
An aluminium sphere is dipped into water. Which of the following is true ?
1 Buoyancy will be less in water at $0^{\circ} \mathrm{C}$ than that is water at $4^{\circ} \mathrm{C}$
2 Buoyancy will be more in water at $0^{\circ} \mathrm{C}$ than that in water at $4^{\circ} \mathrm{C}$
3 Buoyancy in water at $0^{\circ} \mathrm{C}$ will be same as that in water at $4^{\circ} \mathrm{C}$
4 Buoyancy may be more or less in water $4^{\circ} \mathrm{C}$ depending on the radius of the sphere
Explanation:
A Buoyancy depends on the fluid in which the body is immersed. It depends upon the density of the fluid. Since density of water is maximum at $4^{\circ} \mathrm{C}$ so the buoyancy at $4^{\circ} \mathrm{C}$ will be maximum.
143363
A vessel contains oil (density $\rho_{1}$ ) over a liquid of density $\rho_{2}$. A homogeneous sphere of volume $V$ floats with half of its volume immersed in the liquid and the other half in oil. The weight of the sphere is
B Weight of floating body $=$ Weight of liquid displaced $\mathrm{W} =\rho_{1} \times \frac{\mathrm{V}}{2} \times \mathrm{g}+\rho_{2} \times \frac{\mathrm{V}}{2} \times \mathrm{g}$ $=\frac{\mathrm{V}\left(\rho_{1}+\rho_{2}\right) \mathrm{g}}{2}$
NDA (I) 2010
Mechanical Properties of Fluids
143306
A spherical object of density $\rho$ is immersed in a fluid of density $\sigma$. The object will move
1 downwards if $\rho>\sigma$
2 downwards if $\sigma>\rho$
3 upwards if $\rho \lt \sigma$
4 upwards if $\rho>\sigma$
Explanation:
A ,c) : If the density of object is greater than that of liquid $(\rho>\sigma)$, then object will move downward, If the density of object is lesser than that of liquid $(\rho \lt $ $\sigma$ ), then object move upward
UPSEE - 2011
Mechanical Properties of Fluids
143318
A ball floats on the surface of water in a container exposed to the atmosphere. When the container is covered and the air is partially removed, then the ball
1 rises
2 gets immersed more in water
3 remains immersed at its former depth
4 may rise or sink.
Explanation:
B When the container is covered and the air is partially removed then the ball gets immersed more in water because the weight of the ball is supported by the boyant force of water and boyant force due to air.
COMEDK 2020
Mechanical Properties of Fluids
143331
An aluminium sphere is dipped into water. Which of the following is true ?
1 Buoyancy will be less in water at $0^{\circ} \mathrm{C}$ than that is water at $4^{\circ} \mathrm{C}$
2 Buoyancy will be more in water at $0^{\circ} \mathrm{C}$ than that in water at $4^{\circ} \mathrm{C}$
3 Buoyancy in water at $0^{\circ} \mathrm{C}$ will be same as that in water at $4^{\circ} \mathrm{C}$
4 Buoyancy may be more or less in water $4^{\circ} \mathrm{C}$ depending on the radius of the sphere
Explanation:
A Buoyancy depends on the fluid in which the body is immersed. It depends upon the density of the fluid. Since density of water is maximum at $4^{\circ} \mathrm{C}$ so the buoyancy at $4^{\circ} \mathrm{C}$ will be maximum.
143363
A vessel contains oil (density $\rho_{1}$ ) over a liquid of density $\rho_{2}$. A homogeneous sphere of volume $V$ floats with half of its volume immersed in the liquid and the other half in oil. The weight of the sphere is
B Weight of floating body $=$ Weight of liquid displaced $\mathrm{W} =\rho_{1} \times \frac{\mathrm{V}}{2} \times \mathrm{g}+\rho_{2} \times \frac{\mathrm{V}}{2} \times \mathrm{g}$ $=\frac{\mathrm{V}\left(\rho_{1}+\rho_{2}\right) \mathrm{g}}{2}$
NDA (I) 2010
Mechanical Properties of Fluids
143306
A spherical object of density $\rho$ is immersed in a fluid of density $\sigma$. The object will move
1 downwards if $\rho>\sigma$
2 downwards if $\sigma>\rho$
3 upwards if $\rho \lt \sigma$
4 upwards if $\rho>\sigma$
Explanation:
A ,c) : If the density of object is greater than that of liquid $(\rho>\sigma)$, then object will move downward, If the density of object is lesser than that of liquid $(\rho \lt $ $\sigma$ ), then object move upward
UPSEE - 2011
Mechanical Properties of Fluids
143318
A ball floats on the surface of water in a container exposed to the atmosphere. When the container is covered and the air is partially removed, then the ball
1 rises
2 gets immersed more in water
3 remains immersed at its former depth
4 may rise or sink.
Explanation:
B When the container is covered and the air is partially removed then the ball gets immersed more in water because the weight of the ball is supported by the boyant force of water and boyant force due to air.
COMEDK 2020
Mechanical Properties of Fluids
143331
An aluminium sphere is dipped into water. Which of the following is true ?
1 Buoyancy will be less in water at $0^{\circ} \mathrm{C}$ than that is water at $4^{\circ} \mathrm{C}$
2 Buoyancy will be more in water at $0^{\circ} \mathrm{C}$ than that in water at $4^{\circ} \mathrm{C}$
3 Buoyancy in water at $0^{\circ} \mathrm{C}$ will be same as that in water at $4^{\circ} \mathrm{C}$
4 Buoyancy may be more or less in water $4^{\circ} \mathrm{C}$ depending on the radius of the sphere
Explanation:
A Buoyancy depends on the fluid in which the body is immersed. It depends upon the density of the fluid. Since density of water is maximum at $4^{\circ} \mathrm{C}$ so the buoyancy at $4^{\circ} \mathrm{C}$ will be maximum.
143363
A vessel contains oil (density $\rho_{1}$ ) over a liquid of density $\rho_{2}$. A homogeneous sphere of volume $V$ floats with half of its volume immersed in the liquid and the other half in oil. The weight of the sphere is
B Weight of floating body $=$ Weight of liquid displaced $\mathrm{W} =\rho_{1} \times \frac{\mathrm{V}}{2} \times \mathrm{g}+\rho_{2} \times \frac{\mathrm{V}}{2} \times \mathrm{g}$ $=\frac{\mathrm{V}\left(\rho_{1}+\rho_{2}\right) \mathrm{g}}{2}$
NDA (I) 2010
Mechanical Properties of Fluids
143306
A spherical object of density $\rho$ is immersed in a fluid of density $\sigma$. The object will move
1 downwards if $\rho>\sigma$
2 downwards if $\sigma>\rho$
3 upwards if $\rho \lt \sigma$
4 upwards if $\rho>\sigma$
Explanation:
A ,c) : If the density of object is greater than that of liquid $(\rho>\sigma)$, then object will move downward, If the density of object is lesser than that of liquid $(\rho \lt $ $\sigma$ ), then object move upward
UPSEE - 2011
Mechanical Properties of Fluids
143318
A ball floats on the surface of water in a container exposed to the atmosphere. When the container is covered and the air is partially removed, then the ball
1 rises
2 gets immersed more in water
3 remains immersed at its former depth
4 may rise or sink.
Explanation:
B When the container is covered and the air is partially removed then the ball gets immersed more in water because the weight of the ball is supported by the boyant force of water and boyant force due to air.
COMEDK 2020
Mechanical Properties of Fluids
143331
An aluminium sphere is dipped into water. Which of the following is true ?
1 Buoyancy will be less in water at $0^{\circ} \mathrm{C}$ than that is water at $4^{\circ} \mathrm{C}$
2 Buoyancy will be more in water at $0^{\circ} \mathrm{C}$ than that in water at $4^{\circ} \mathrm{C}$
3 Buoyancy in water at $0^{\circ} \mathrm{C}$ will be same as that in water at $4^{\circ} \mathrm{C}$
4 Buoyancy may be more or less in water $4^{\circ} \mathrm{C}$ depending on the radius of the sphere
Explanation:
A Buoyancy depends on the fluid in which the body is immersed. It depends upon the density of the fluid. Since density of water is maximum at $4^{\circ} \mathrm{C}$ so the buoyancy at $4^{\circ} \mathrm{C}$ will be maximum.
