Surface Tension
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361233 Assertion :
Shape of a liquid drop is governed by force of gravity and surface tension.
Reason :
Excess pressure inside a drop is directly proportional to surface tension.

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

361234 Two soap bubbles of radii \(r_{1}\) and \(r_{2}\) equals to \(6\;cm\) and \(8\;cm\) are touching each other over a common surface \(S_{1} S_{2}\) whose radius will be
supporting img

1 \(24\;cm\)
2 \(22\;cm\)
3 \(12\;cm\)
4 \(10\;cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361235 A bubble of \(8\,mm\) diameter is formed in the air. The surface tension of soap solution is \(30\,{\mkern 1mu} dyne/cm.\) The excess pressure inside the bubble is

1 \(150\,{\mkern 1mu} dyne/c{m^2}\)
2 \(300\,{\mkern 1mu} dyne/c{m^2}\)
3 \(3 \times {10^3}{\mkern 1mu} dyne/c{m^2}\)
4 \(12\,{\mkern 1mu} dyne/c{m^2}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361236 A soap bubble, having radius of \(1\;mm\), is blown from a detergent solution having a surface tension of \(2.5 \times {10^{ - 2}}\;N/m\). The pressure inside the bubble equals at a point \(Z_{0}\) below the free surface of water in a container. Taking \(g = 10\,m/{s^2}\), density of water \( = {10^3}\;kg/{m^3}\), the value of \({Z_0}\) is :

1 \(100\,\;cm\)
2 \(10\;cm\)
3 \(1\;cm\)
4 \(0.5\;\,cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361233 Assertion :
Shape of a liquid drop is governed by force of gravity and surface tension.
Reason :
Excess pressure inside a drop is directly proportional to surface tension.

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

361234 Two soap bubbles of radii \(r_{1}\) and \(r_{2}\) equals to \(6\;cm\) and \(8\;cm\) are touching each other over a common surface \(S_{1} S_{2}\) whose radius will be
supporting img

1 \(24\;cm\)
2 \(22\;cm\)
3 \(12\;cm\)
4 \(10\;cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361235 A bubble of \(8\,mm\) diameter is formed in the air. The surface tension of soap solution is \(30\,{\mkern 1mu} dyne/cm.\) The excess pressure inside the bubble is

1 \(150\,{\mkern 1mu} dyne/c{m^2}\)
2 \(300\,{\mkern 1mu} dyne/c{m^2}\)
3 \(3 \times {10^3}{\mkern 1mu} dyne/c{m^2}\)
4 \(12\,{\mkern 1mu} dyne/c{m^2}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361236 A soap bubble, having radius of \(1\;mm\), is blown from a detergent solution having a surface tension of \(2.5 \times {10^{ - 2}}\;N/m\). The pressure inside the bubble equals at a point \(Z_{0}\) below the free surface of water in a container. Taking \(g = 10\,m/{s^2}\), density of water \( = {10^3}\;kg/{m^3}\), the value of \({Z_0}\) is :

1 \(100\,\;cm\)
2 \(10\;cm\)
3 \(1\;cm\)
4 \(0.5\;\,cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361233 Assertion :
Shape of a liquid drop is governed by force of gravity and surface tension.
Reason :
Excess pressure inside a drop is directly proportional to surface tension.

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

361234 Two soap bubbles of radii \(r_{1}\) and \(r_{2}\) equals to \(6\;cm\) and \(8\;cm\) are touching each other over a common surface \(S_{1} S_{2}\) whose radius will be
supporting img

1 \(24\;cm\)
2 \(22\;cm\)
3 \(12\;cm\)
4 \(10\;cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361235 A bubble of \(8\,mm\) diameter is formed in the air. The surface tension of soap solution is \(30\,{\mkern 1mu} dyne/cm.\) The excess pressure inside the bubble is

1 \(150\,{\mkern 1mu} dyne/c{m^2}\)
2 \(300\,{\mkern 1mu} dyne/c{m^2}\)
3 \(3 \times {10^3}{\mkern 1mu} dyne/c{m^2}\)
4 \(12\,{\mkern 1mu} dyne/c{m^2}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361236 A soap bubble, having radius of \(1\;mm\), is blown from a detergent solution having a surface tension of \(2.5 \times {10^{ - 2}}\;N/m\). The pressure inside the bubble equals at a point \(Z_{0}\) below the free surface of water in a container. Taking \(g = 10\,m/{s^2}\), density of water \( = {10^3}\;kg/{m^3}\), the value of \({Z_0}\) is :

1 \(100\,\;cm\)
2 \(10\;cm\)
3 \(1\;cm\)
4 \(0.5\;\,cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361233 Assertion :
Shape of a liquid drop is governed by force of gravity and surface tension.
Reason :
Excess pressure inside a drop is directly proportional to surface tension.

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

361234 Two soap bubbles of radii \(r_{1}\) and \(r_{2}\) equals to \(6\;cm\) and \(8\;cm\) are touching each other over a common surface \(S_{1} S_{2}\) whose radius will be
supporting img

1 \(24\;cm\)
2 \(22\;cm\)
3 \(12\;cm\)
4 \(10\;cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361235 A bubble of \(8\,mm\) diameter is formed in the air. The surface tension of soap solution is \(30\,{\mkern 1mu} dyne/cm.\) The excess pressure inside the bubble is

1 \(150\,{\mkern 1mu} dyne/c{m^2}\)
2 \(300\,{\mkern 1mu} dyne/c{m^2}\)
3 \(3 \times {10^3}{\mkern 1mu} dyne/c{m^2}\)
4 \(12\,{\mkern 1mu} dyne/c{m^2}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361236 A soap bubble, having radius of \(1\;mm\), is blown from a detergent solution having a surface tension of \(2.5 \times {10^{ - 2}}\;N/m\). The pressure inside the bubble equals at a point \(Z_{0}\) below the free surface of water in a container. Taking \(g = 10\,m/{s^2}\), density of water \( = {10^3}\;kg/{m^3}\), the value of \({Z_0}\) is :

1 \(100\,\;cm\)
2 \(10\;cm\)
3 \(1\;cm\)
4 \(0.5\;\,cm\)