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PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361002 A stream lined body falls through air from a height on the surface of a liquid. Let \(d\) and \(D\) denote the densities of the materials of the body and the liquid respectively. If \(D>d\), then the time after which the body will be instantaneously at rest is

1 \(\sqrt{\dfrac{2 h}{g}}\)
2 \(\sqrt{\dfrac{2 h}{g} \dfrac{D}{g}}\)
3 \(\sqrt{\dfrac{2 h}{g} \dfrac{d}{D}}\)
4 \(\dfrac{d}{(D-d)} \sqrt{\dfrac{2 h}{g}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361003 Assertion :
The shape of an automobile is so designed constant with that its front resembles the streamline pattern of the fluid through which it moves.
Reason :
The resistance offered by the fluid is maximum in streamlined shapes.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361004 A sphere of relative density \(\sigma\) and diameter \(D\) has concentric cavity of diameter \(d\). The ratio of \(\dfrac{D}{d}\), if it just floats on water in a tank is

1 \(\left(\dfrac{\sigma-1}{\sigma}\right)^{1 / 3}\)
2 \(\left(\dfrac{\sigma}{\sigma-1}\right)^{1 / 3}\)
3 \(\left(\dfrac{\sigma+1}{\sigma-1}\right)^{1 / 3}\)
4 \(\left(\dfrac{\sigma-2}{\sigma+2}\right)^{1 / 3}\)
JEE - 2024
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361005 An aluminium sphere is dipped into water. Which of the following is true?

1 Buoyancy in water at \(0^\circ C\) will be same as that in water at \(4^\circ C.\)
2 Buoyancy will be less in water at \(0^\circ C\) than that in water at \(4^\circ C.\)
3 Buoyancy may be more or less in water at \(4^\circ C\) depending on the radius of the sphere
4 Buoyancy will be more in water at \(0^\circ C\) than that in water at \(4^\circ C.\)
KCET - 2019
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PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361002 A stream lined body falls through air from a height on the surface of a liquid. Let \(d\) and \(D\) denote the densities of the materials of the body and the liquid respectively. If \(D>d\), then the time after which the body will be instantaneously at rest is

1 \(\sqrt{\dfrac{2 h}{g}}\)
2 \(\sqrt{\dfrac{2 h}{g} \dfrac{D}{g}}\)
3 \(\sqrt{\dfrac{2 h}{g} \dfrac{d}{D}}\)
4 \(\dfrac{d}{(D-d)} \sqrt{\dfrac{2 h}{g}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361003 Assertion :
The shape of an automobile is so designed constant with that its front resembles the streamline pattern of the fluid through which it moves.
Reason :
The resistance offered by the fluid is maximum in streamlined shapes.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361004 A sphere of relative density \(\sigma\) and diameter \(D\) has concentric cavity of diameter \(d\). The ratio of \(\dfrac{D}{d}\), if it just floats on water in a tank is

1 \(\left(\dfrac{\sigma-1}{\sigma}\right)^{1 / 3}\)
2 \(\left(\dfrac{\sigma}{\sigma-1}\right)^{1 / 3}\)
3 \(\left(\dfrac{\sigma+1}{\sigma-1}\right)^{1 / 3}\)
4 \(\left(\dfrac{\sigma-2}{\sigma+2}\right)^{1 / 3}\)
JEE - 2024
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361005 An aluminium sphere is dipped into water. Which of the following is true?

1 Buoyancy in water at \(0^\circ C\) will be same as that in water at \(4^\circ C.\)
2 Buoyancy will be less in water at \(0^\circ C\) than that in water at \(4^\circ C.\)
3 Buoyancy may be more or less in water at \(4^\circ C\) depending on the radius of the sphere
4 Buoyancy will be more in water at \(0^\circ C\) than that in water at \(4^\circ C.\)
KCET - 2019
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PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361002 A stream lined body falls through air from a height on the surface of a liquid. Let \(d\) and \(D\) denote the densities of the materials of the body and the liquid respectively. If \(D>d\), then the time after which the body will be instantaneously at rest is

1 \(\sqrt{\dfrac{2 h}{g}}\)
2 \(\sqrt{\dfrac{2 h}{g} \dfrac{D}{g}}\)
3 \(\sqrt{\dfrac{2 h}{g} \dfrac{d}{D}}\)
4 \(\dfrac{d}{(D-d)} \sqrt{\dfrac{2 h}{g}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361003 Assertion :
The shape of an automobile is so designed constant with that its front resembles the streamline pattern of the fluid through which it moves.
Reason :
The resistance offered by the fluid is maximum in streamlined shapes.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361004 A sphere of relative density \(\sigma\) and diameter \(D\) has concentric cavity of diameter \(d\). The ratio of \(\dfrac{D}{d}\), if it just floats on water in a tank is

1 \(\left(\dfrac{\sigma-1}{\sigma}\right)^{1 / 3}\)
2 \(\left(\dfrac{\sigma}{\sigma-1}\right)^{1 / 3}\)
3 \(\left(\dfrac{\sigma+1}{\sigma-1}\right)^{1 / 3}\)
4 \(\left(\dfrac{\sigma-2}{\sigma+2}\right)^{1 / 3}\)
JEE - 2024
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361005 An aluminium sphere is dipped into water. Which of the following is true?

1 Buoyancy in water at \(0^\circ C\) will be same as that in water at \(4^\circ C.\)
2 Buoyancy will be less in water at \(0^\circ C\) than that in water at \(4^\circ C.\)
3 Buoyancy may be more or less in water at \(4^\circ C\) depending on the radius of the sphere
4 Buoyancy will be more in water at \(0^\circ C\) than that in water at \(4^\circ C.\)
KCET - 2019
For More Updates join with Us
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361002 A stream lined body falls through air from a height on the surface of a liquid. Let \(d\) and \(D\) denote the densities of the materials of the body and the liquid respectively. If \(D>d\), then the time after which the body will be instantaneously at rest is

1 \(\sqrt{\dfrac{2 h}{g}}\)
2 \(\sqrt{\dfrac{2 h}{g} \dfrac{D}{g}}\)
3 \(\sqrt{\dfrac{2 h}{g} \dfrac{d}{D}}\)
4 \(\dfrac{d}{(D-d)} \sqrt{\dfrac{2 h}{g}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361003 Assertion :
The shape of an automobile is so designed constant with that its front resembles the streamline pattern of the fluid through which it moves.
Reason :
The resistance offered by the fluid is maximum in streamlined shapes.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361004 A sphere of relative density \(\sigma\) and diameter \(D\) has concentric cavity of diameter \(d\). The ratio of \(\dfrac{D}{d}\), if it just floats on water in a tank is

1 \(\left(\dfrac{\sigma-1}{\sigma}\right)^{1 / 3}\)
2 \(\left(\dfrac{\sigma}{\sigma-1}\right)^{1 / 3}\)
3 \(\left(\dfrac{\sigma+1}{\sigma-1}\right)^{1 / 3}\)
4 \(\left(\dfrac{\sigma-2}{\sigma+2}\right)^{1 / 3}\)
JEE - 2024
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361005 An aluminium sphere is dipped into water. Which of the following is true?

1 Buoyancy in water at \(0^\circ C\) will be same as that in water at \(4^\circ C.\)
2 Buoyancy will be less in water at \(0^\circ C\) than that in water at \(4^\circ C.\)
3 Buoyancy may be more or less in water at \(4^\circ C\) depending on the radius of the sphere
4 Buoyancy will be more in water at \(0^\circ C\) than that in water at \(4^\circ C.\)
KCET - 2019