1
IIT-JEE 2012 Paper 1 Offline
Numerical
+4
-0

A lamina is made by removing a small disc of diameter 2R from a bigger disc of uniform mass density and radius 2R, as shown in the figure. The moment of inertia of this lamina about axes passing through O and P is IO and IP respectively. Both these axes are perpendicular to the plane of the lamina. The ratio IO/IP to the nearest integer is ____________.

IIT-JEE 2012 Paper 1 Offline Physics - Impulse & Momentum Question 5 English

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2
IIT-JEE 2012 Paper 1 Offline
Numerical
+4
-0

A cylinder cavity of diameter a exists inside a cylinder of diameter 2a as shown in the figure. Both the cylinder and the cavity are infinitely long. A uniform current density J flows along the length. If the magnitude of the magnetic field at the point P is given by $${N \over {12}}{\mu _0}aJ$$, then the value of N is ______________.

IIT-JEE 2012 Paper 1 Offline Physics - Magnetism Question 17 English

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