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Equal mass of three liquids are kept in three identical cylindrical vessels \(A\), \(B\) and \(C\). The densities are \(\rho_A,~\rho_B,~\rho_C\) with \(\rho_A<\rho_B<\rho_C\) . The force on the base will be:

1. | \(A\) | maximum in vessel

2. | \(B\) | maximum in vessel

3. | \(C\) | maximum in vessel

4. | equal in all the vessels |

Subtopic: Pressure |

58%

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A tank full of water is placed in an elevator. The elevator accelerates upward. The water pressure at the bottom of the tank:

1. | decreases |

2. | increases |

3. | remains unchanged |

4. | first increases and then decreases |

Subtopic: Pressure |

77%

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Two copper vessels \(A\) and \(B\) have the same base area but are of different shapes. \(A\) takes twice the volume of water that \(B\) requires to fill up to a particular common height. Then the correct statement among the following is:

1. | \(A\) and \(B\) is the same. | pressure on the base area of vessels

2. | \(A\) and \(B\) is not the same. | pressure on the base area of vessels

3. | \(A\) and \(B\) weigh the same. | both vessels

4. | \(B\) weighs twice that of \(A\). | vessel

Subtopic: Pressure |

69%

From NCERT

NEET - 2022

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Toricelli’s barometer used mercury. Pascal duplicated it using French wine of density \(984~\text{kg/m}^3.\) The height of the wine column for normal atmospheric pressure is:

1. \(11.5~\text{m}\)

2. \(10.5~\text{m}\)

3. \(9.00~\text{m}\)

4. \(15.0~\text{m}\)

Subtopic: Pressure |

71%

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A hydraulic automobile lift is designed to lift cars with a maximum mass of \(3000\) kg. The area of the cross-section of the piston carrying the load is \(425\) cm^{2}. What maximum pressure would the smaller piston have to bear?

1. \(3.12\times10^{5}\) Pa

2. \(1.01\times10^{5}\) Pa

3. \(2.94\times10^{5}\) Pa

4. \(6.92\times10^{5}\) Pa

Subtopic: Pressure |

79%

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A small sphere of density \(\rho\) is completely submerged in a liquid of density \(3\rho\) and released. The magnitude of its acceleration just after release equals:

1. \(g\)

2. \(\frac g3\)

3. \(2g\)

4. \(3g\)

1. \(g\)

2. \(\frac g3\)

3. \(2g\)

4. \(3g\)

Subtopic: Archimedes' Principle |

63%

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A wooden block with a coin placed on its top, floats in water as shown in the figure.

The distances \(\mathrm{l}\) and \(\mathrm{h}\) are shown in the figure. After some time, the coin falls

into the water. Then,

(a) | \(\mathrm{l}\) decreases |

(b) | \(\mathrm{h}\) decreases |

(c) | \(\mathrm{l}\) increases |

(d) | \(\mathrm{h}\) increases |

Choose the correct alterative/s:

1. | (b), (c) |

2. | (a), (d) |

3. | (c), (d) |

4. | (a), (b) |

Subtopic: Archimedes' Principle |

59%

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Two non-mixing liquids of densities \(\rho\) and \(n\rho\) \((n>1)\) are put in a container. The height of each liquid is \(h.\) A solid cylinder of length \(L\) and density \(d\) is put in this container. The cylinder floats with its axis vertical and length \(rL~(r<1))\) in the denser liquid. The density \(d\) is equal to:

1. \([2+(n+1)r ]\rho\)

2. \([2+(n-1)r] \rho\)

3. \([1+(n-1)r] \rho\)

4. \([1+(n+1)r ]\rho\)

Subtopic: Archimedes' Principle |

66%

From NCERT

NEET - 2016

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Streamline flow is more likely for liquids with,

(a) | high density. | (b) | high viscosity. |

(c) | low density. | (d) | low viscosity. |

Choose the correct option:

1. | (a), (b) | 2. | (c), (d) |

3. | (b), (c) | 4. | (a), (d) |

Subtopic: Types of Flows |

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

1. | 2. | ||

3. | 4. |

Subtopic: Types of Flows |

89%

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