| ⇦ | 
| ⇨ |
Two discs of same material and thickness have radii 0.2 m and 0.6 m. Their moments of inertia about their axes will be in the ratio
Options
(a) 1 : 81
(b) 1 : 27
(c) 1 : 9
(d) 1 : 3
Correct Answer:
1 : 81
Explanation:
I = (1/2) MR² = (1/2) (πR²t ρ) R² = πtρR⁴ / 2
t and p are same
I₁/I₂ = [R₁/R₂]⁴ = [0.2 / 0.6]⁴ = 1 / 81.
Related Questions: - Charge Q is divided into two parts which are then kept some distance apart. The force
- When we hear a sound, we can identify its source from
- A charged particle (charge q) is moving in a circle of radius R with uniform speed v
- A body moves with a uniform acceleration a and zero initial velocity
- Which one of the following statement is FALSE ?
Topics: Motion of system of Particles and Rigid Body
(73)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Charge Q is divided into two parts which are then kept some distance apart. The force
- When we hear a sound, we can identify its source from
- A charged particle (charge q) is moving in a circle of radius R with uniform speed v
- A body moves with a uniform acceleration a and zero initial velocity
- Which one of the following statement is FALSE ?
Topics: Motion of system of Particles and Rigid Body (73)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
I want to gain more knowledge about this