Moment of Inertia Absorb Before You Solve MCQs Systems of Particles and Rotational Motion Physics NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Q1:

Five particles of mass $2$ kg each are attached to the circumference of a circular disc of a radius of $0.1$ m and negligible mass. The moment of inertia of the system about the axis passing through the centre of the disc and perpendicular to its plane will be:
1. $1$ kg-m²
2. $0.1$ kg-m²
3. $2$ kg-m²
4. $0.2$ kg-m²

Subtopic: Moment of Inertia |

83%

From NCERT

1

2

3

4

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

Q2:

A light rod of length

$l$ has two masses,

$m_1$ and

$m_2,$ attached to its two ends. The moment of inertia of the system about an axis perpendicular to the rod and passing through the centre of mass is:
1.

$\frac{m_1m_2}{m_1+m_2}l^2$
2.

$\frac{m_1+m_2}{m_1m_2}l^2$
3.

$(m_1+m_2)l^2$
4.

$\sqrt{(m_1m_2)}l^2$

Subtopic: Moment of Inertia |

77%

From NCERT

NEET - 2016

1

2

3

4

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

Q3:

The one-quarter sector is cut from a uniform circular disc of radius $R$ . This sector has a mass $M$ . It is made to rotate about a line perpendicular to its plane and passing through the centre of the original disc. Its moment of inertia about the axis of rotation will be:

1.	$\frac{1}{2} M R^2$	2.	$\frac{1}{4} M R^2$
3.	$\frac{1}{8} M R^2$	4.	$\sqrt{2} M R^2$

Subtopic: Moment of Inertia |

72%

From NCERT

1

2

3

4

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

Q4:

Consider two uniform discs of the same thickness and different radii

$R_1=R$ and

$R_2=\alpha R$ made of the same material. If the ratio of their moments of inertia,

$I_1$ and

$I_2,$ respectively, about their axes is

$I_1:I_2=1:16,$ then the value of

$\alpha$ is:
1.

$\sqrt{2}$
2.

$4$
3.

$2$
4.

$2\sqrt{2}$

Subtopic: Moment of Inertia |

From NCERT

1

2

3

4

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

Q5:

An energy of

$484~\text J$ is spent in increasing the speed of a flywheel from

$60~\text{rpm}$ to

$360~\text{rpm}.$ The moment of inertia of the flywheel is:

1.	$0.7~\text{kg-m}^2$	2.	$3.22~\text{kg-m}^2$
3.	$30.8~\text{kg-m}^2$	4.	$0.07~\text{kg-m}^2$

Subtopic: Moment of Inertia |

58%

From NCERT

NEET - 2022

1

2

3

4

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

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions