Select Chapter Topics:

An airplane of a total wing area of \(120~\text{m}^2\) is in a level flight at some height. If the pressure difference between the upper and lower surface is \(2.5~\text{kPa}\), then the mass of the airplane is:

(Take \(g=10~\text{ms}^{-2}\))

1. \(2\times10^3~\text{kg}\)

2. \(3\times10^4~\text{kg}\)

3. \(5\times10^4~\text{kg}\)

4. \(7\times10^4~\text{kg}\)

(Take \(g=10~\text{ms}^{-2}\))

1. \(2\times10^3~\text{kg}\)

2. \(3\times10^4~\text{kg}\)

3. \(5\times10^4~\text{kg}\)

4. \(7\times10^4~\text{kg}\)

Subtopic: Pressure |

84%

From NCERT

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

A liquid is poured into three vessels of the same base area and equal heights as shown in the figure, then:

1. | The maximum force on the base will be for the vessel \(C.\) |

2. | The maximum force on the base will be for the vessel \(B.\) |

3. | The maximum force on the base will be for the vessel \(A.\) |

4. | Force on the base will be equal for all the vessels. |

Subtopic: Pressure |

82%

From NCERT

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

The area of cross-section of the wider tube shown in the figure is \(800~\text{cm}^2\). If a mass of \(12~\text{kg}\) is placed on the massless piston, then the difference in heights \(h\) of the levels of water in the two tubes will be:

1. | \(10~\text{cm}\) | 2. | \(6~\text{cm}\) |

3. | \(15~\text{cm}\) | 4. | \(2~\text{cm}\) |

Subtopic: Pressure |

68%

From NCERT

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

The value of g at a place decreases by 2%. Then, the barometric height of mercury:

1. | increases by 2%. | 2. | decreases by 2%. |

3. | remains unchanged. | 4. | sometimes increases and sometimes decreases. |

Subtopic: Pressure |

67%

From NCERT

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

The height of a mercury barometer is 75 cm at sea level and 50 cm at the top of a hill. The ratio of density of mercury to that of air is ${10}^{4}$. The height of the hill is:

1. | 250 m | 2. | 2.5 km |

3. | 1.25 km | 4. | 750 m |

Subtopic: Pressure |

63%

From NCERT

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

A vertical \(\mathrm{U}\)-tube of uniform inner cross-section contains mercury in both its arms. A glycerin (density\(=1.3\) g/cm^{3}) column of length \(10\) cm is introduced into one of its arms. Oil of density \(0.8\) g/cm^{3 } is poured into the other arm until the upper surfaces of the oil and glycerin are at the same horizontal level. The length of the oil column is:

(density of mercury \(=13.6\) g/cm^{3})

1. \(10.4\) cm

2. \(8.2\) cm

3. \(7.2\) cm

4. \(9.6\) cm

Subtopic: Pressure |

64%

From NCERT

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

A barometer kept in a stationary elevator reads 76 cm. If the elevator starts accelerating up, the reading will be:

1. | zero. | 2. | equal to 76 cm. |

3. | more than 76 cm. | 4. | less than 76 cm. |

Subtopic: Pressure |

63%

From NCERT

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

There are four cylindrical vessels identical in dimensions. If these are filled with equal masses of four different liquids P, Q, R, and S such that their densities are ${\mathrm{\rho}}_{\mathrm{p}}$ $>$ ${\mathrm{\rho}}_{\mathrm{Q}}$ $>$ ${\mathrm{\rho}}_{\mathrm{R}}$ $>$ ${\mathrm{\rho}}_{\mathrm{S}}$, then pressure at the base of vessel will be:

1. | ${\mathrm{P}}_{\mathrm{p}}$ $=$ ${\mathrm{P}}_{\mathrm{Q}}$ $=$ ${\mathrm{P}}_{\mathrm{R}}$ $=$ ${\mathrm{P}}_{\mathrm{S}}$ | 2. | ${\mathrm{P}}_{\mathrm{p}}$ $>$ ${\mathrm{P}}_{\mathrm{Q}}$ $>$ ${\mathrm{P}}_{\mathrm{R}}$ $>$ ${\mathrm{P}}_{\mathrm{S}}$ |

3. | ${\mathrm{P}}_{\mathrm{p}}$ $<$ ${\mathrm{P}}_{\mathrm{Q}}$ $<$ ${\mathrm{P}}_{\mathrm{R}}$ $<$ ${\mathrm{P}}_{\mathrm{S}}$ | 4. | Data is insufficient to predict the relation |

Subtopic: Pressure |

58%

From NCERT

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Which of the following diagrams does not represent a streamline flow?

1. | 2. | ||

3. | 4. |

Subtopic: Types of Flows |

88%

From NCERT

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Three liquids of densities \(d,\) \(2d\) and \(3d\) are mixed in equal proportions of weights. The relative density of the mixture is:

1. | \(11d \over 7\) | 2. | \(18d \over 11\) |

3. | \(13d \over 9\) | 4. | \(23d \over 18\) |

Subtopic: Properties of Fluids |

75%

From NCERT

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch