Surface Tension
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361250 The excess pressure inside a soap bubble is thrice the excess pressure inside a second soap bubble. The ratio between the volume of the first and the second bubble is

1 \(1: 27\)
2 \(1: 3\)
3 \(1: 81\)
4 \(1: 9\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361251 A bowl whose bottom has round holes of diameter \(1\,mm\) is filled with water. Assuming that surface tension acts only at holes, find the maximum height up to which water can be filled in the vessel without leakage. (Given, surface tension of water \({=75 \times 10^{-3} {Nm}^{-1}, g=10 {~ms}^{-2}}\) and density of water \({=1 {~g} / {cm}^{3}}\).

1 \(1\,cm\)
2 \(3\,cm\)
3 \(5\,cm\)
4 \(8\,cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361252 Assertion :
Water drops take spherical shape when falling freely.
Reason :
Water has minimum surface tension among all liquids.

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

361253 In air, a charged soap bubble of radius ' \(R\) ' breaks into 27 small soap bubbles of equal radius ' \(r\) '. Then the ratio of mechanical force acting per unit area of big soap bubble to that of a small soap bubble is

1 \(\dfrac{1}{81}\)
2 \(\dfrac{3}{1}\)
3 \(\dfrac{1}{3}\)
4 \(\dfrac{9}{1}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361250 The excess pressure inside a soap bubble is thrice the excess pressure inside a second soap bubble. The ratio between the volume of the first and the second bubble is

1 \(1: 27\)
2 \(1: 3\)
3 \(1: 81\)
4 \(1: 9\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361251 A bowl whose bottom has round holes of diameter \(1\,mm\) is filled with water. Assuming that surface tension acts only at holes, find the maximum height up to which water can be filled in the vessel without leakage. (Given, surface tension of water \({=75 \times 10^{-3} {Nm}^{-1}, g=10 {~ms}^{-2}}\) and density of water \({=1 {~g} / {cm}^{3}}\).

1 \(1\,cm\)
2 \(3\,cm\)
3 \(5\,cm\)
4 \(8\,cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361252 Assertion :
Water drops take spherical shape when falling freely.
Reason :
Water has minimum surface tension among all liquids.

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

361253 In air, a charged soap bubble of radius ' \(R\) ' breaks into 27 small soap bubbles of equal radius ' \(r\) '. Then the ratio of mechanical force acting per unit area of big soap bubble to that of a small soap bubble is

1 \(\dfrac{1}{81}\)
2 \(\dfrac{3}{1}\)
3 \(\dfrac{1}{3}\)
4 \(\dfrac{9}{1}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361250 The excess pressure inside a soap bubble is thrice the excess pressure inside a second soap bubble. The ratio between the volume of the first and the second bubble is

1 \(1: 27\)
2 \(1: 3\)
3 \(1: 81\)
4 \(1: 9\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361251 A bowl whose bottom has round holes of diameter \(1\,mm\) is filled with water. Assuming that surface tension acts only at holes, find the maximum height up to which water can be filled in the vessel without leakage. (Given, surface tension of water \({=75 \times 10^{-3} {Nm}^{-1}, g=10 {~ms}^{-2}}\) and density of water \({=1 {~g} / {cm}^{3}}\).

1 \(1\,cm\)
2 \(3\,cm\)
3 \(5\,cm\)
4 \(8\,cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361252 Assertion :
Water drops take spherical shape when falling freely.
Reason :
Water has minimum surface tension among all liquids.

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

361253 In air, a charged soap bubble of radius ' \(R\) ' breaks into 27 small soap bubbles of equal radius ' \(r\) '. Then the ratio of mechanical force acting per unit area of big soap bubble to that of a small soap bubble is

1 \(\dfrac{1}{81}\)
2 \(\dfrac{3}{1}\)
3 \(\dfrac{1}{3}\)
4 \(\dfrac{9}{1}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361250 The excess pressure inside a soap bubble is thrice the excess pressure inside a second soap bubble. The ratio between the volume of the first and the second bubble is

1 \(1: 27\)
2 \(1: 3\)
3 \(1: 81\)
4 \(1: 9\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361251 A bowl whose bottom has round holes of diameter \(1\,mm\) is filled with water. Assuming that surface tension acts only at holes, find the maximum height up to which water can be filled in the vessel without leakage. (Given, surface tension of water \({=75 \times 10^{-3} {Nm}^{-1}, g=10 {~ms}^{-2}}\) and density of water \({=1 {~g} / {cm}^{3}}\).

1 \(1\,cm\)
2 \(3\,cm\)
3 \(5\,cm\)
4 \(8\,cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361252 Assertion :
Water drops take spherical shape when falling freely.
Reason :
Water has minimum surface tension among all liquids.

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

361253 In air, a charged soap bubble of radius ' \(R\) ' breaks into 27 small soap bubbles of equal radius ' \(r\) '. Then the ratio of mechanical force acting per unit area of big soap bubble to that of a small soap bubble is

1 \(\dfrac{1}{81}\)
2 \(\dfrac{3}{1}\)
3 \(\dfrac{1}{3}\)
4 \(\dfrac{9}{1}\)