Solved papers for JEE Main & Advanced JEE Main Paper (Held On 12 April 2014)
done JEE Main Paper (Held On 12 April 2014) Total Questions - 2
question_answer1) A spherically symmetric charge distribution is characterized by a charge density having the following variations: \[\rho (r)={{\rho }_{o}}\left( 1-\frac{r}{R} \right)\]for r < R\[\rho (r)=0\]for \[r\ge R\] Where r is the distance from the centre of the charge distribution \[{{\rho }_{o}}\]is a constant. The electric field at an internal point (r < R) is:
[JEE Main Online Paper ( Held On 12 Apirl 2014 )
question_answer2) The space between the plates of a parallel plate capacitor is filled with a 'dielectric' whose 'dielectric constant' varies with distance as per the relation: \[K(x)={{K}_{o}}+\lambda x\] (\[\lambda =\] a constant) The capacitance C, of the capacitor, would be related to its vacuum capacitance Co for the relation :
[JEE Main Online Paper ( Held On 12 Apirl 2014 )