361280 If the surface tension of a soap solution is \(3 \times {10^{ - 2}}\;N/m\) then the work done in forming a soap film of \(20\;\,cm \times 5\;\,cm\) will be

361281 A cylinder with a movable piston contains air under a pressure \(p_{1}\) and a soap bubble of radius ' \(r\) '. The pressure \(p_{2}\) to which the air should be compressed by slowly pushing the piston into the cylinder for the soap bubble to reduce its size by half will be : (The surface tension is \(\sigma\) and the temperature \(T\) is maintained constant)

361282 A big water drop is formed by the combination of ' \(n\) ' small water drops of equal radii. The ratio of the surface energy of ' \(n\) ' drops to the surface energy of big drop is

361283 Surface tension of a soap bubble is \(2.0 \times {10^{ - 2}}N{m^{ - 1}}\). Work done to increase the radius of soap bubble from \(3.5\;cm\) to \(7\;cm\) will be
Take \(\left[\pi=\dfrac{22}{7}\right]\)

361280 If the surface tension of a soap solution is \(3 \times {10^{ - 2}}\;N/m\) then the work done in forming a soap film of \(20\;\,cm \times 5\;\,cm\) will be

361281 A cylinder with a movable piston contains air under a pressure \(p_{1}\) and a soap bubble of radius ' \(r\) '. The pressure \(p_{2}\) to which the air should be compressed by slowly pushing the piston into the cylinder for the soap bubble to reduce its size by half will be : (The surface tension is \(\sigma\) and the temperature \(T\) is maintained constant)

361282 A big water drop is formed by the combination of ' \(n\) ' small water drops of equal radii. The ratio of the surface energy of ' \(n\) ' drops to the surface energy of big drop is

361283 Surface tension of a soap bubble is \(2.0 \times {10^{ - 2}}N{m^{ - 1}}\). Work done to increase the radius of soap bubble from \(3.5\;cm\) to \(7\;cm\) will be
Take \(\left[\pi=\dfrac{22}{7}\right]\)

361280 If the surface tension of a soap solution is \(3 \times {10^{ - 2}}\;N/m\) then the work done in forming a soap film of \(20\;\,cm \times 5\;\,cm\) will be

361281 A cylinder with a movable piston contains air under a pressure \(p_{1}\) and a soap bubble of radius ' \(r\) '. The pressure \(p_{2}\) to which the air should be compressed by slowly pushing the piston into the cylinder for the soap bubble to reduce its size by half will be : (The surface tension is \(\sigma\) and the temperature \(T\) is maintained constant)

361282 A big water drop is formed by the combination of ' \(n\) ' small water drops of equal radii. The ratio of the surface energy of ' \(n\) ' drops to the surface energy of big drop is

361283 Surface tension of a soap bubble is \(2.0 \times {10^{ - 2}}N{m^{ - 1}}\). Work done to increase the radius of soap bubble from \(3.5\;cm\) to \(7\;cm\) will be
Take \(\left[\pi=\dfrac{22}{7}\right]\)

361280 If the surface tension of a soap solution is \(3 \times {10^{ - 2}}\;N/m\) then the work done in forming a soap film of \(20\;\,cm \times 5\;\,cm\) will be

361281 A cylinder with a movable piston contains air under a pressure \(p_{1}\) and a soap bubble of radius ' \(r\) '. The pressure \(p_{2}\) to which the air should be compressed by slowly pushing the piston into the cylinder for the soap bubble to reduce its size by half will be : (The surface tension is \(\sigma\) and the temperature \(T\) is maintained constant)

361282 A big water drop is formed by the combination of ' \(n\) ' small water drops of equal radii. The ratio of the surface energy of ' \(n\) ' drops to the surface energy of big drop is

361283 Surface tension of a soap bubble is \(2.0 \times {10^{ - 2}}N{m^{ - 1}}\). Work done to increase the radius of soap bubble from \(3.5\;cm\) to \(7\;cm\) will be
Take \(\left[\pi=\dfrac{22}{7}\right]\)