The amount of energy required to form a soap bubble of radius \(2~\text{cm}\) from a soap solution is nearly:

\((\)surface tension of soap solution \(0.03~\text{Nm}^{-1})\)

1. \(50.1 \times 10^{-4}~\text{J}\)

2. \(30.16 \times 10^{-4}~ \text{J}\)

3. \(5.06 \times 10^{-4} ~\text{J}\)

4. \(3.01\times 10^{-4} ~\text{J}\)

\((\)surface tension of soap solution \(0.03~\text{Nm}^{-1})\)

1. \(50.1 \times 10^{-4}~\text{J}\)

2. \(30.16 \times 10^{-4}~ \text{J}\)

3. \(5.06 \times 10^{-4} ~\text{J}\)

4. \(3.01\times 10^{-4} ~\text{J}\)

Subtopic: Surface Tension |

58%

From NCERT

NEET - 2023

Please attempt this question first.

Hints

Please attempt this question first.

If a soap bubble expands, the pressure inside the bubble:

1. | is equal to the atmospheric pressure | 2. | decreases |

3. | increases | 4. | remains the same |

Subtopic: Surface Tension |

68%

From NCERT

NEET - 2022

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Air is pushed carefully into a soap bubble of radius \(r\) to double its radius. If the surface tension of the soap solution is \(T,\) then work done in the process is:

1. | \(12\pi r^2T\) | 2. | \(24\pi r^2T\) |

3. | \(4\pi r^2T\) | 4. | \(8\pi r^2T\) |

Subtopic: Surface Tension |

60%

From NCERT

NEET - 2022

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

A liquid does not wet the solid surface if the angle of contact is:

1. equal to $\mathrm{}$\(45^{\circ}\)

2. equal to \(60^{\circ}\)$\mathrm{}$

3. greater then \(90^{\circ}\)$\mathrm{}$

4. zero

Subtopic: Surface Tension |

77%

From NCERT

NEET - 2020

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

Links

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

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

1. | \(0.5~\text{cm}\) | 2. | \(100~\text{cm}\) |

3. | \(10~\text{cm}\) | 4. | \(1~\text{cm}\) |

Subtopic: Surface Tension |

55%

From NCERT

NEET - 2019

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

Links

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

A rectangular film of liquid is extended from \((4~\text{cm} \times 2~\text{cm})\) to \((5~\text{cm} \times 4~\text{cm}).\) If the work done is \(3\times 10^{-4}\) J, the value of the surface tension of the liquid is:

1. \(0.250\) Nm^{–1}

2. \(0.125\) Nm^{–1}

3. \(0.2\) Nm^{–1}

4. \(8.0\) Nm^{–1}

Subtopic: Surface Tension |

70%

From NCERT

NEET - 2016

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

Links

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

A certain number of spherical drops of a liquid of radius \({r}\) coalesce to form a single drop of radius \({R}\) and volume \({V}\). If \({T}\) is the surface tension of the liquid, then:

1. | energy \(= 4{VT}\left( \frac{1}{{r}} - \frac{1}{{R}}\right)\) is released. |

2. | energy \(={ 3{VT}\left( \frac{1}{{r}} + \frac{1}{{R}}\right)}\) is released. |

3. | energy \(={ 3{VT}\left( \frac{1}{{r}} - \frac{1}{{R}}\right)}\) is released. |

4. | energy is neither released nor absorbed. |

Subtopic: Surface Tension |

72%

From NCERT

AIPMT - 2014

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

The wettability of a surface by a liquid depends primarily on:

1. | surface tension. |

2. | density. |

3. | angle of contact between the surface and the liquid. |

4. | viscosity. |

Subtopic: Surface Tension |

85%

From NCERT

AIPMT - 2013

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

Links

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh