Select Chapter Topics:

A wire can sustain a weight of 10 kg before breaking. If the wire is cut into two equal parts, then each part can sustain a weight of:

1. | 2.5 kg | 2. | 5 kg |

3. | 10 kg | 4. | 15 kg |

Subtopic: Stress - Strain |

72%

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 1000 kg lift is tied with metallic wires of maximum safe stress of 1.4 $\times $ 10^{8} N m^{-2}. If the maximum acceleration of the lift is 1.2 m s^{-2}, then the minimum diameter of the wire is:

1. 1 m

2. 0.1 m

3. 0.01 m

4. 0.001 m

Subtopic: Stress - Strain |

55%

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

Overall changes in volume and radius of a uniform cylindrical steel wire are 0.2% and 0.002% respectively when subjected to some suitable force. Longitudinal tensile stress acting on the wire is: ($\mathrm{Y}=2.0\times {10}^{11}$ ${\mathrm{Nm}}^{-2}$)

1. $3.2\times {10}^{11}$ ${\mathrm{Nm}}^{-2}$

2. $3.2\times {10}^{7}$ ${\mathrm{Nm}}^{-2}$

3. $3.6\times {10}^{9}$ ${\mathrm{Nm}}^{-2}$

4. 3.9$\times {10}^{8}$ ${\mathrm{Nm}}^{-2}$

Subtopic: Young's modulus |

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

Choose the correct statement.

1. | Breaking stress does not depend on the area of cross-section. |

2. | \(\mathrm{B}_{\text {solid }}>\mathrm{B}_{\text {gas }}>\mathrm{B}_{\text {liquid }}\)where B is the bulk modulus. |

3. | Breaking load does not depend on the area of cross-section. |

4. | Young's modulus always decreases on decreasing the temperature. |

Subtopic: Shear and bulk modulus |

53%

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 steel ring of radius \(\mathrm{r}\) and cross-section area \(\mathrm{A}\) is fitted onto a wooden disc of radius \(\mathrm{R}(\mathrm{R}>\mathrm{r}).\) If Young's modulus is \(\mathrm{E},\) then the force with which the steel ring is expanded is:

1. | \(\mathrm{AE} \frac{\mathrm{R}}{\mathrm{r}} \) | 2. | \(A E \frac{R-r}{r} \) |

3. | \(\frac{E}{A} \frac{R-r}{A} \) | 4. | \(\frac{\mathrm{Er}}{\mathrm{AR}}\) |

Subtopic: Young's modulus |

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 light rod of length 2m is suspended from the ceiling horizontally by means of two vertical wires of equal length. A weight W is hung from the light rod as shown in the figure. The rod is hung by means of a steel wire of cross-sectional area ${A}_{1}=0.1$ $c{m}^{2}$ and brass wire of cross-sectional area ${A}_{2}=0.2$ $c{m}^{2}$. To have equal stress in both wires, ${\mathrm{T}}_{1}/{\mathrm{T}}_{2}$=?

1. | 1/3 | 2. | 1/4 |

3. | 4/3 | 4. | 1/2 |

Subtopic: Stress - Strain |

74%

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 stress versus strain graphs for wires of two materials A and B are as shown in the figure. If ${\mathrm{Y}}_{\mathrm{A}}$ $\mathrm{and}$ ${\mathrm{Y}}_{\mathrm{B}}$ are the Young's moduli of the materials, then:

1. | Y_{B} = 2Y_{A} |
2. | Y_{A} = Y_{B} |

3. | Y_{B} = 3Y_{A} |
4. | Y_{A} = 3Y_{B} |

Subtopic: Stress - Strain Curve |

77%

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

Copper of fixed volume \(V\) is drawn into a wire of length \(l.\) When this wire is subjected to a constant force \(F,\) the extension produced in the wire is \(\Delta l.\) Which of the following graphs is a straight line?

1. \(\Delta l ~\text{vs}~\frac{1}{l}\)

2. \(\Delta l ~\text{vs}~l^2\)

3. \(\Delta l ~\text{vs}~\frac{1}{l^2}\)

4. \(\Delta l ~\text{vs}~l\)

Subtopic: Young's modulus |

70%

From NCERT

AIPMT - 2014

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

Two wires are made of the same material and have the same volume. The first wire has a cross-sectional area \(A\) and the second wire has a cross-sectional area \(3A\). If the length of the first wire is increased by \(\Delta l\) on applying a force \(F\), how much force is needed to stretch the second wire by the same amount?

1. | \(9F\) | 2. | \(6F\) |

3. | \(4F\) | 4. | \(F\) |

Subtopic: Young's modulus |

76%

From NCERT

NEET - 2018

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 vessel of \(1\times 10^{-3}\) m^{3} volume contains oil. When a pressure of \(1.2 \times10^5\) N/m^{2 }is applied on it, then volume decreases by \(0.3 \times 10^{-6}\) m^{3}. The bulk modulus of oil is:

1. | \(1 \times 10^6 \mathrm{~N} / \mathrm{m}^2 \) | 2. | \(2 \times 10^7 \mathrm{~N} / \mathrm{m}^2 \) |

3. | \(4 \times 10^8 \mathrm{~N} / \mathrm{m}^2 \) | 4. | \(6 \times 10^{10} \mathrm{~N} / \mathrm{m}^2\) |

Subtopic: Shear and bulk modulus |

87%

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