Viscocity
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361399 The velocity of rain drop having radius 1 \(mm\) is \({20 {~cm} {~s}^{-1}}\). The velocity of raindrops of size 3 \(mm\) is

1 \({60 {~cm} / {s}}\)
2 \({120 {~cm} / {s}}\)
3 \({180 {~cm} / {s}}\)
4 \({20 {~cm} / {s}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361400 An air bubble of radius \(1\;cm\) rises from the bottom portion through a liquid of density \(1.5\,g\,c{c^{ - 1}}\) at a constant speed of \(0.25{\mkern 1mu} {\mkern 1mu} cm\,{s^{ - 1}}.\) If the density of air is neglected, the coefficient of viscosity of the liquid is approximately (in \(P a\) ).

1 13000
2 1300
3 130
4 13
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361401 Spherical particles of pollen are shaken up in water and allowed to settle. The depth of water is \(2 \times {10^{ - 2}}\;m\). What is the diameter of the largest particles remaining in suspension one hour later? Density of pollen \( = 1.8 \times {10^3}kg{m^{ - 3}}\), viscosity of water \(=1 \times 10^{-2}\) poise and density of water \( = 1 \times {10^3}\;kg\;{m^3}\).

1 \(1.74\,\mu m\)
2 \(2.4\,\mu m\)
3 \(0.8\,\mu m\)
4 \(3.54\,\mu m\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361402 A spherical body falling through a viscous liquid of infinite extent ultimately attains a constant value of velocity then

1 Upthrust + weight \(=\) viscous frag
2 Weight + viscous drag = upthrust
3 Viscous drag + upthrust \(=\) weight
4 Viscous drag + upthrust \(>\) weight
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361403 A rain drop of radius \(0.3\;\,mm\) falling vertically downwards in air has a terminal velocity of 1 \(m/s\). The viscosity of air is \(18 \times 10^{-5}\) poise. The viscous force on the drop is

1 \(101.73 \times 10^{-4}\) dyne
2 \(101.73 \times 10^{-5}\) dyne
3 \(16.95 \times 10^{-5}\) dyne
4 \(16.95 \times 10^{-4}\) dyne
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361399 The velocity of rain drop having radius 1 \(mm\) is \({20 {~cm} {~s}^{-1}}\). The velocity of raindrops of size 3 \(mm\) is

1 \({60 {~cm} / {s}}\)
2 \({120 {~cm} / {s}}\)
3 \({180 {~cm} / {s}}\)
4 \({20 {~cm} / {s}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361400 An air bubble of radius \(1\;cm\) rises from the bottom portion through a liquid of density \(1.5\,g\,c{c^{ - 1}}\) at a constant speed of \(0.25{\mkern 1mu} {\mkern 1mu} cm\,{s^{ - 1}}.\) If the density of air is neglected, the coefficient of viscosity of the liquid is approximately (in \(P a\) ).

1 13000
2 1300
3 130
4 13
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361401 Spherical particles of pollen are shaken up in water and allowed to settle. The depth of water is \(2 \times {10^{ - 2}}\;m\). What is the diameter of the largest particles remaining in suspension one hour later? Density of pollen \( = 1.8 \times {10^3}kg{m^{ - 3}}\), viscosity of water \(=1 \times 10^{-2}\) poise and density of water \( = 1 \times {10^3}\;kg\;{m^3}\).

1 \(1.74\,\mu m\)
2 \(2.4\,\mu m\)
3 \(0.8\,\mu m\)
4 \(3.54\,\mu m\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361402 A spherical body falling through a viscous liquid of infinite extent ultimately attains a constant value of velocity then

1 Upthrust + weight \(=\) viscous frag
2 Weight + viscous drag = upthrust
3 Viscous drag + upthrust \(=\) weight
4 Viscous drag + upthrust \(>\) weight
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361403 A rain drop of radius \(0.3\;\,mm\) falling vertically downwards in air has a terminal velocity of 1 \(m/s\). The viscosity of air is \(18 \times 10^{-5}\) poise. The viscous force on the drop is

1 \(101.73 \times 10^{-4}\) dyne
2 \(101.73 \times 10^{-5}\) dyne
3 \(16.95 \times 10^{-5}\) dyne
4 \(16.95 \times 10^{-4}\) dyne
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361399 The velocity of rain drop having radius 1 \(mm\) is \({20 {~cm} {~s}^{-1}}\). The velocity of raindrops of size 3 \(mm\) is

1 \({60 {~cm} / {s}}\)
2 \({120 {~cm} / {s}}\)
3 \({180 {~cm} / {s}}\)
4 \({20 {~cm} / {s}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361400 An air bubble of radius \(1\;cm\) rises from the bottom portion through a liquid of density \(1.5\,g\,c{c^{ - 1}}\) at a constant speed of \(0.25{\mkern 1mu} {\mkern 1mu} cm\,{s^{ - 1}}.\) If the density of air is neglected, the coefficient of viscosity of the liquid is approximately (in \(P a\) ).

1 13000
2 1300
3 130
4 13
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361401 Spherical particles of pollen are shaken up in water and allowed to settle. The depth of water is \(2 \times {10^{ - 2}}\;m\). What is the diameter of the largest particles remaining in suspension one hour later? Density of pollen \( = 1.8 \times {10^3}kg{m^{ - 3}}\), viscosity of water \(=1 \times 10^{-2}\) poise and density of water \( = 1 \times {10^3}\;kg\;{m^3}\).

1 \(1.74\,\mu m\)
2 \(2.4\,\mu m\)
3 \(0.8\,\mu m\)
4 \(3.54\,\mu m\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361402 A spherical body falling through a viscous liquid of infinite extent ultimately attains a constant value of velocity then

1 Upthrust + weight \(=\) viscous frag
2 Weight + viscous drag = upthrust
3 Viscous drag + upthrust \(=\) weight
4 Viscous drag + upthrust \(>\) weight
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361403 A rain drop of radius \(0.3\;\,mm\) falling vertically downwards in air has a terminal velocity of 1 \(m/s\). The viscosity of air is \(18 \times 10^{-5}\) poise. The viscous force on the drop is

1 \(101.73 \times 10^{-4}\) dyne
2 \(101.73 \times 10^{-5}\) dyne
3 \(16.95 \times 10^{-5}\) dyne
4 \(16.95 \times 10^{-4}\) dyne
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361399 The velocity of rain drop having radius 1 \(mm\) is \({20 {~cm} {~s}^{-1}}\). The velocity of raindrops of size 3 \(mm\) is

1 \({60 {~cm} / {s}}\)
2 \({120 {~cm} / {s}}\)
3 \({180 {~cm} / {s}}\)
4 \({20 {~cm} / {s}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361400 An air bubble of radius \(1\;cm\) rises from the bottom portion through a liquid of density \(1.5\,g\,c{c^{ - 1}}\) at a constant speed of \(0.25{\mkern 1mu} {\mkern 1mu} cm\,{s^{ - 1}}.\) If the density of air is neglected, the coefficient of viscosity of the liquid is approximately (in \(P a\) ).

1 13000
2 1300
3 130
4 13
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361401 Spherical particles of pollen are shaken up in water and allowed to settle. The depth of water is \(2 \times {10^{ - 2}}\;m\). What is the diameter of the largest particles remaining in suspension one hour later? Density of pollen \( = 1.8 \times {10^3}kg{m^{ - 3}}\), viscosity of water \(=1 \times 10^{-2}\) poise and density of water \( = 1 \times {10^3}\;kg\;{m^3}\).

1 \(1.74\,\mu m\)
2 \(2.4\,\mu m\)
3 \(0.8\,\mu m\)
4 \(3.54\,\mu m\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361402 A spherical body falling through a viscous liquid of infinite extent ultimately attains a constant value of velocity then

1 Upthrust + weight \(=\) viscous frag
2 Weight + viscous drag = upthrust
3 Viscous drag + upthrust \(=\) weight
4 Viscous drag + upthrust \(>\) weight
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361403 A rain drop of radius \(0.3\;\,mm\) falling vertically downwards in air has a terminal velocity of 1 \(m/s\). The viscosity of air is \(18 \times 10^{-5}\) poise. The viscous force on the drop is

1 \(101.73 \times 10^{-4}\) dyne
2 \(101.73 \times 10^{-5}\) dyne
3 \(16.95 \times 10^{-5}\) dyne
4 \(16.95 \times 10^{-4}\) dyne
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361399 The velocity of rain drop having radius 1 \(mm\) is \({20 {~cm} {~s}^{-1}}\). The velocity of raindrops of size 3 \(mm\) is

1 \({60 {~cm} / {s}}\)
2 \({120 {~cm} / {s}}\)
3 \({180 {~cm} / {s}}\)
4 \({20 {~cm} / {s}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361400 An air bubble of radius \(1\;cm\) rises from the bottom portion through a liquid of density \(1.5\,g\,c{c^{ - 1}}\) at a constant speed of \(0.25{\mkern 1mu} {\mkern 1mu} cm\,{s^{ - 1}}.\) If the density of air is neglected, the coefficient of viscosity of the liquid is approximately (in \(P a\) ).

1 13000
2 1300
3 130
4 13
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361401 Spherical particles of pollen are shaken up in water and allowed to settle. The depth of water is \(2 \times {10^{ - 2}}\;m\). What is the diameter of the largest particles remaining in suspension one hour later? Density of pollen \( = 1.8 \times {10^3}kg{m^{ - 3}}\), viscosity of water \(=1 \times 10^{-2}\) poise and density of water \( = 1 \times {10^3}\;kg\;{m^3}\).

1 \(1.74\,\mu m\)
2 \(2.4\,\mu m\)
3 \(0.8\,\mu m\)
4 \(3.54\,\mu m\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361402 A spherical body falling through a viscous liquid of infinite extent ultimately attains a constant value of velocity then

1 Upthrust + weight \(=\) viscous frag
2 Weight + viscous drag = upthrust
3 Viscous drag + upthrust \(=\) weight
4 Viscous drag + upthrust \(>\) weight
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361403 A rain drop of radius \(0.3\;\,mm\) falling vertically downwards in air has a terminal velocity of 1 \(m/s\). The viscosity of air is \(18 \times 10^{-5}\) poise. The viscous force on the drop is

1 \(101.73 \times 10^{-4}\) dyne
2 \(101.73 \times 10^{-5}\) dyne
3 \(16.95 \times 10^{-5}\) dyne
4 \(16.95 \times 10^{-4}\) dyne