Surface Tension
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361181 If \(h\) is the height of capillary rise and \(r\) is the radius of the capillary tube, then which of the following relation will be correct?

1 \(h r=\) constant
2 \(h / r^{2}=\) constant
3 \(h r^{2}=\) constant
4 \(h / r=\) constant
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361182 Find the pressure at point \(A\) just below the meniscus is... \(T\) is surface tension and \(r\) is radius of the cavity. Assume that contact angle is \(180^{\circ}\)
supporting img

1 \(P_{\text {atm }}\)
2 \(P_{a t m}+\dfrac{2 T}{r}\)
3 \(P_{a t m}-\dfrac{2 T}{r}\)
4 \(P_{a t m}+\dfrac{4 T}{r}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361183 Two capillary tubes \(P\) and \(Q\) are dipped vertically in water. The height of water level in capillary tube \(P\) is \(\frac{{{2^{nd}}}}{3}\) of the height in capillary tube \(Q\). The ratio of their diameter is ____

1 \(2\,:\,3\)
2 \(3\,:\,2\)
3 \(3\,:\,4\)
4 \(4\,:\,3\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361184 A cube of side \(a\) and mass \(m\) just floats on the surface of water as shown in the figure. The surface tension and density of water are \(T\) and \(\rho\), respectively. If angle of contact between cube and water surface is zero, find the distance \(h\) (in metres) between the lower face of cube and surface of the water.
supporting img

1 \(\dfrac{m g+a T}{a^{2} \rho g}\)
2 \(\dfrac{m g+4 a T}{a^{2} \rho g}\)
3 \(\dfrac{m g+2 a T}{a^{2} \rho g}\)
4 \(\dfrac{4 a T}{a \rho g}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361185 If a liquid rises to the same height in two capillaries of the same material at the same temperature, then

1 The weight of liquid in both capillaries are not equal
2 The radius of meniscus must be equal
3 The capillaries must be cylindrical and vertical
4 Given conditions are not possible
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361181 If \(h\) is the height of capillary rise and \(r\) is the radius of the capillary tube, then which of the following relation will be correct?

1 \(h r=\) constant
2 \(h / r^{2}=\) constant
3 \(h r^{2}=\) constant
4 \(h / r=\) constant
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361182 Find the pressure at point \(A\) just below the meniscus is... \(T\) is surface tension and \(r\) is radius of the cavity. Assume that contact angle is \(180^{\circ}\)
supporting img

1 \(P_{\text {atm }}\)
2 \(P_{a t m}+\dfrac{2 T}{r}\)
3 \(P_{a t m}-\dfrac{2 T}{r}\)
4 \(P_{a t m}+\dfrac{4 T}{r}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361183 Two capillary tubes \(P\) and \(Q\) are dipped vertically in water. The height of water level in capillary tube \(P\) is \(\frac{{{2^{nd}}}}{3}\) of the height in capillary tube \(Q\). The ratio of their diameter is ____

1 \(2\,:\,3\)
2 \(3\,:\,2\)
3 \(3\,:\,4\)
4 \(4\,:\,3\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361184 A cube of side \(a\) and mass \(m\) just floats on the surface of water as shown in the figure. The surface tension and density of water are \(T\) and \(\rho\), respectively. If angle of contact between cube and water surface is zero, find the distance \(h\) (in metres) between the lower face of cube and surface of the water.
supporting img

1 \(\dfrac{m g+a T}{a^{2} \rho g}\)
2 \(\dfrac{m g+4 a T}{a^{2} \rho g}\)
3 \(\dfrac{m g+2 a T}{a^{2} \rho g}\)
4 \(\dfrac{4 a T}{a \rho g}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361185 If a liquid rises to the same height in two capillaries of the same material at the same temperature, then

1 The weight of liquid in both capillaries are not equal
2 The radius of meniscus must be equal
3 The capillaries must be cylindrical and vertical
4 Given conditions are not possible
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361181 If \(h\) is the height of capillary rise and \(r\) is the radius of the capillary tube, then which of the following relation will be correct?

1 \(h r=\) constant
2 \(h / r^{2}=\) constant
3 \(h r^{2}=\) constant
4 \(h / r=\) constant
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361182 Find the pressure at point \(A\) just below the meniscus is... \(T\) is surface tension and \(r\) is radius of the cavity. Assume that contact angle is \(180^{\circ}\)
supporting img

1 \(P_{\text {atm }}\)
2 \(P_{a t m}+\dfrac{2 T}{r}\)
3 \(P_{a t m}-\dfrac{2 T}{r}\)
4 \(P_{a t m}+\dfrac{4 T}{r}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361183 Two capillary tubes \(P\) and \(Q\) are dipped vertically in water. The height of water level in capillary tube \(P\) is \(\frac{{{2^{nd}}}}{3}\) of the height in capillary tube \(Q\). The ratio of their diameter is ____

1 \(2\,:\,3\)
2 \(3\,:\,2\)
3 \(3\,:\,4\)
4 \(4\,:\,3\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361184 A cube of side \(a\) and mass \(m\) just floats on the surface of water as shown in the figure. The surface tension and density of water are \(T\) and \(\rho\), respectively. If angle of contact between cube and water surface is zero, find the distance \(h\) (in metres) between the lower face of cube and surface of the water.
supporting img

1 \(\dfrac{m g+a T}{a^{2} \rho g}\)
2 \(\dfrac{m g+4 a T}{a^{2} \rho g}\)
3 \(\dfrac{m g+2 a T}{a^{2} \rho g}\)
4 \(\dfrac{4 a T}{a \rho g}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361185 If a liquid rises to the same height in two capillaries of the same material at the same temperature, then

1 The weight of liquid in both capillaries are not equal
2 The radius of meniscus must be equal
3 The capillaries must be cylindrical and vertical
4 Given conditions are not possible
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361181 If \(h\) is the height of capillary rise and \(r\) is the radius of the capillary tube, then which of the following relation will be correct?

1 \(h r=\) constant
2 \(h / r^{2}=\) constant
3 \(h r^{2}=\) constant
4 \(h / r=\) constant
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361182 Find the pressure at point \(A\) just below the meniscus is... \(T\) is surface tension and \(r\) is radius of the cavity. Assume that contact angle is \(180^{\circ}\)
supporting img

1 \(P_{\text {atm }}\)
2 \(P_{a t m}+\dfrac{2 T}{r}\)
3 \(P_{a t m}-\dfrac{2 T}{r}\)
4 \(P_{a t m}+\dfrac{4 T}{r}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361183 Two capillary tubes \(P\) and \(Q\) are dipped vertically in water. The height of water level in capillary tube \(P\) is \(\frac{{{2^{nd}}}}{3}\) of the height in capillary tube \(Q\). The ratio of their diameter is ____

1 \(2\,:\,3\)
2 \(3\,:\,2\)
3 \(3\,:\,4\)
4 \(4\,:\,3\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361184 A cube of side \(a\) and mass \(m\) just floats on the surface of water as shown in the figure. The surface tension and density of water are \(T\) and \(\rho\), respectively. If angle of contact between cube and water surface is zero, find the distance \(h\) (in metres) between the lower face of cube and surface of the water.
supporting img

1 \(\dfrac{m g+a T}{a^{2} \rho g}\)
2 \(\dfrac{m g+4 a T}{a^{2} \rho g}\)
3 \(\dfrac{m g+2 a T}{a^{2} \rho g}\)
4 \(\dfrac{4 a T}{a \rho g}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361185 If a liquid rises to the same height in two capillaries of the same material at the same temperature, then

1 The weight of liquid in both capillaries are not equal
2 The radius of meniscus must be equal
3 The capillaries must be cylindrical and vertical
4 Given conditions are not possible
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361181 If \(h\) is the height of capillary rise and \(r\) is the radius of the capillary tube, then which of the following relation will be correct?

1 \(h r=\) constant
2 \(h / r^{2}=\) constant
3 \(h r^{2}=\) constant
4 \(h / r=\) constant
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361182 Find the pressure at point \(A\) just below the meniscus is... \(T\) is surface tension and \(r\) is radius of the cavity. Assume that contact angle is \(180^{\circ}\)
supporting img

1 \(P_{\text {atm }}\)
2 \(P_{a t m}+\dfrac{2 T}{r}\)
3 \(P_{a t m}-\dfrac{2 T}{r}\)
4 \(P_{a t m}+\dfrac{4 T}{r}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361183 Two capillary tubes \(P\) and \(Q\) are dipped vertically in water. The height of water level in capillary tube \(P\) is \(\frac{{{2^{nd}}}}{3}\) of the height in capillary tube \(Q\). The ratio of their diameter is ____

1 \(2\,:\,3\)
2 \(3\,:\,2\)
3 \(3\,:\,4\)
4 \(4\,:\,3\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361184 A cube of side \(a\) and mass \(m\) just floats on the surface of water as shown in the figure. The surface tension and density of water are \(T\) and \(\rho\), respectively. If angle of contact between cube and water surface is zero, find the distance \(h\) (in metres) between the lower face of cube and surface of the water.
supporting img

1 \(\dfrac{m g+a T}{a^{2} \rho g}\)
2 \(\dfrac{m g+4 a T}{a^{2} \rho g}\)
3 \(\dfrac{m g+2 a T}{a^{2} \rho g}\)
4 \(\dfrac{4 a T}{a \rho g}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361185 If a liquid rises to the same height in two capillaries of the same material at the same temperature, then

1 The weight of liquid in both capillaries are not equal
2 The radius of meniscus must be equal
3 The capillaries must be cylindrical and vertical
4 Given conditions are not possible