Exams › NEET › Physics

A circular disc is to be made using iron and aluminium. To keep its moment of inertia maximum about a geometrical axis, it should be so prepared that :-

1. aluminium at interior and iron surrounds it
2. iron at interior and aluminium surrounds it
3. aluminium and iron layers in alternate order
4. sheet of iron is used at both external surfaces and aluminium sheet as inner material

Correct answer: aluminium at interior and iron surrounds it

Related NEET Physics questions

• A force F = 4i + 10j (Newtons) acts at a point with position vector r = -5i + 3j (metres) relative to the origin on the rotation axis. What is the torque acting on the body?
• If angular displacement of a particle moving on a curved path be given as,  = 1.5 t + 2t 2 , where t is in sec, the angular velocity at t = 2 sec, will be
• A solid sphere rolls down on two different inclined planes of same height, but of different inclinations. In both cases
• All the particles of a rigid body in a rotatory motion have axis of rotation:
• A fan is running at 3000 rpm. It is switched off. It comes to rest by uniformly decreasing its angular speed in 10 seconds. The total number of revolution in this period.
• From the theorem of perpendicular axes. If the lamina is in X- Y plane

⚔️ Practice NEET Physics free + battle 1v1 →