143202
A wooden sphere is being weighed in a liquid whose temperature is continuously increased. What will happen to the apparent weight of the sphere?
1 Increases
2 Decreases
3 Remains unchanged
4 Changes erratically
Explanation:
A As temperature of the liquid is raised continuously, density will decrease and buoyant force, $\mathrm{F}_{\mathrm{b}}=\rho_{\text {liq. }} . \mathrm{Vg}$ So, $F_{b}$, decrease with increase in temperature. Apparent weight $\left(\mathrm{w}_{\mathrm{AP}}\right)=$ weight of the body $-\mathrm{F}_{\mathrm{b}}$ $\mathrm{w}_{\mathrm{AP}}=\mathrm{w}_{\text {body }}-\mathrm{F}_{\mathrm{b}}$ $\mathrm{F}_{\mathrm{b}}$ decrease and $\mathrm{w}_{\text {body }}$ is constant. So, increase the apparent weight of the sphere.
SCRA-2009
Mechanical Properties of Fluids
143203
Iceberg floats in water with part of it submerged. What is the fraction of the volume of iceberg submerged, if the density of ice is $\rho_{i}$ $=0.917 \mathrm{~g} \mathrm{~cm}^{-3}$ ?
1 0.917
2 1
3 0.458
4 0
Explanation:
A Given $\rho_{\text {ice }}=0.917 \mathrm{~g} / \mathrm{cm}^{3}$ $\mathrm{V}_{\mathrm{i}} \times \rho_{\mathrm{i}} \times \mathrm{g}=\mathrm{V}_{\mathrm{w}} \times \rho_{\mathrm{w}} \times \mathrm{g}$ $\frac{\mathrm{V}_{\mathrm{w}}}{\mathrm{V}_{\mathrm{i}}}=\frac{\rho_{\mathrm{i}}}{\rho_{\mathrm{w}}}=\frac{0.917}{1}$ Fraction of the volume of iceberg submerged is 0.917.
Karnataka CET-2020
Mechanical Properties of Fluids
143206
For a body immersed in a liquid, when the weight of the body is less than the up thrust then the body will
1 float partially immersed
2 sink
3 float fully immersed
4 be of zero weight
Explanation:
A Partially immersed in the fluid, Weight of the body $ \lt $ upthrust applied by the fluid - Completely submerged, Weight of the body = upthrust applied by the fluid - Body sink, Weight of the body > upthrust applied by the fluid.
143202
A wooden sphere is being weighed in a liquid whose temperature is continuously increased. What will happen to the apparent weight of the sphere?
1 Increases
2 Decreases
3 Remains unchanged
4 Changes erratically
Explanation:
A As temperature of the liquid is raised continuously, density will decrease and buoyant force, $\mathrm{F}_{\mathrm{b}}=\rho_{\text {liq. }} . \mathrm{Vg}$ So, $F_{b}$, decrease with increase in temperature. Apparent weight $\left(\mathrm{w}_{\mathrm{AP}}\right)=$ weight of the body $-\mathrm{F}_{\mathrm{b}}$ $\mathrm{w}_{\mathrm{AP}}=\mathrm{w}_{\text {body }}-\mathrm{F}_{\mathrm{b}}$ $\mathrm{F}_{\mathrm{b}}$ decrease and $\mathrm{w}_{\text {body }}$ is constant. So, increase the apparent weight of the sphere.
SCRA-2009
Mechanical Properties of Fluids
143203
Iceberg floats in water with part of it submerged. What is the fraction of the volume of iceberg submerged, if the density of ice is $\rho_{i}$ $=0.917 \mathrm{~g} \mathrm{~cm}^{-3}$ ?
1 0.917
2 1
3 0.458
4 0
Explanation:
A Given $\rho_{\text {ice }}=0.917 \mathrm{~g} / \mathrm{cm}^{3}$ $\mathrm{V}_{\mathrm{i}} \times \rho_{\mathrm{i}} \times \mathrm{g}=\mathrm{V}_{\mathrm{w}} \times \rho_{\mathrm{w}} \times \mathrm{g}$ $\frac{\mathrm{V}_{\mathrm{w}}}{\mathrm{V}_{\mathrm{i}}}=\frac{\rho_{\mathrm{i}}}{\rho_{\mathrm{w}}}=\frac{0.917}{1}$ Fraction of the volume of iceberg submerged is 0.917.
Karnataka CET-2020
Mechanical Properties of Fluids
143206
For a body immersed in a liquid, when the weight of the body is less than the up thrust then the body will
1 float partially immersed
2 sink
3 float fully immersed
4 be of zero weight
Explanation:
A Partially immersed in the fluid, Weight of the body $ \lt $ upthrust applied by the fluid - Completely submerged, Weight of the body = upthrust applied by the fluid - Body sink, Weight of the body > upthrust applied by the fluid.
143202
A wooden sphere is being weighed in a liquid whose temperature is continuously increased. What will happen to the apparent weight of the sphere?
1 Increases
2 Decreases
3 Remains unchanged
4 Changes erratically
Explanation:
A As temperature of the liquid is raised continuously, density will decrease and buoyant force, $\mathrm{F}_{\mathrm{b}}=\rho_{\text {liq. }} . \mathrm{Vg}$ So, $F_{b}$, decrease with increase in temperature. Apparent weight $\left(\mathrm{w}_{\mathrm{AP}}\right)=$ weight of the body $-\mathrm{F}_{\mathrm{b}}$ $\mathrm{w}_{\mathrm{AP}}=\mathrm{w}_{\text {body }}-\mathrm{F}_{\mathrm{b}}$ $\mathrm{F}_{\mathrm{b}}$ decrease and $\mathrm{w}_{\text {body }}$ is constant. So, increase the apparent weight of the sphere.
SCRA-2009
Mechanical Properties of Fluids
143203
Iceberg floats in water with part of it submerged. What is the fraction of the volume of iceberg submerged, if the density of ice is $\rho_{i}$ $=0.917 \mathrm{~g} \mathrm{~cm}^{-3}$ ?
1 0.917
2 1
3 0.458
4 0
Explanation:
A Given $\rho_{\text {ice }}=0.917 \mathrm{~g} / \mathrm{cm}^{3}$ $\mathrm{V}_{\mathrm{i}} \times \rho_{\mathrm{i}} \times \mathrm{g}=\mathrm{V}_{\mathrm{w}} \times \rho_{\mathrm{w}} \times \mathrm{g}$ $\frac{\mathrm{V}_{\mathrm{w}}}{\mathrm{V}_{\mathrm{i}}}=\frac{\rho_{\mathrm{i}}}{\rho_{\mathrm{w}}}=\frac{0.917}{1}$ Fraction of the volume of iceberg submerged is 0.917.
Karnataka CET-2020
Mechanical Properties of Fluids
143206
For a body immersed in a liquid, when the weight of the body is less than the up thrust then the body will
1 float partially immersed
2 sink
3 float fully immersed
4 be of zero weight
Explanation:
A Partially immersed in the fluid, Weight of the body $ \lt $ upthrust applied by the fluid - Completely submerged, Weight of the body = upthrust applied by the fluid - Body sink, Weight of the body > upthrust applied by the fluid.
143202
A wooden sphere is being weighed in a liquid whose temperature is continuously increased. What will happen to the apparent weight of the sphere?
1 Increases
2 Decreases
3 Remains unchanged
4 Changes erratically
Explanation:
A As temperature of the liquid is raised continuously, density will decrease and buoyant force, $\mathrm{F}_{\mathrm{b}}=\rho_{\text {liq. }} . \mathrm{Vg}$ So, $F_{b}$, decrease with increase in temperature. Apparent weight $\left(\mathrm{w}_{\mathrm{AP}}\right)=$ weight of the body $-\mathrm{F}_{\mathrm{b}}$ $\mathrm{w}_{\mathrm{AP}}=\mathrm{w}_{\text {body }}-\mathrm{F}_{\mathrm{b}}$ $\mathrm{F}_{\mathrm{b}}$ decrease and $\mathrm{w}_{\text {body }}$ is constant. So, increase the apparent weight of the sphere.
SCRA-2009
Mechanical Properties of Fluids
143203
Iceberg floats in water with part of it submerged. What is the fraction of the volume of iceberg submerged, if the density of ice is $\rho_{i}$ $=0.917 \mathrm{~g} \mathrm{~cm}^{-3}$ ?
1 0.917
2 1
3 0.458
4 0
Explanation:
A Given $\rho_{\text {ice }}=0.917 \mathrm{~g} / \mathrm{cm}^{3}$ $\mathrm{V}_{\mathrm{i}} \times \rho_{\mathrm{i}} \times \mathrm{g}=\mathrm{V}_{\mathrm{w}} \times \rho_{\mathrm{w}} \times \mathrm{g}$ $\frac{\mathrm{V}_{\mathrm{w}}}{\mathrm{V}_{\mathrm{i}}}=\frac{\rho_{\mathrm{i}}}{\rho_{\mathrm{w}}}=\frac{0.917}{1}$ Fraction of the volume of iceberg submerged is 0.917.
Karnataka CET-2020
Mechanical Properties of Fluids
143206
For a body immersed in a liquid, when the weight of the body is less than the up thrust then the body will
1 float partially immersed
2 sink
3 float fully immersed
4 be of zero weight
Explanation:
A Partially immersed in the fluid, Weight of the body $ \lt $ upthrust applied by the fluid - Completely submerged, Weight of the body = upthrust applied by the fluid - Body sink, Weight of the body > upthrust applied by the fluid.