Solved papers for JEE Main & Advanced JEE Main Paper (Held On 12 May 2012)
done JEE Main Paper (Held On 12 May 2012) Total Questions - 2
question_answer1) A solid sphere is rolling on a surface as shown in figure, with a translational velocity \[v\,m\,{{s}^{-1}}.\] If it is to climb the inclined surface continuing to roll without slipping, then minimum velocity for this to happen is
JEE Main Online Paper (Held On 12 May 2012)
question_answer2) This question has Statement land Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement 1: When moment of inertia/of a body rotating about an axis with angular speed \[\omega \]increases, its angular momentum L is unchanged but the kinetic energy K increases if there is no torque applied on it. Statement 2: \[L=I\omega ,\] kinetic energy of rotation \[=\frac{1}{2}I{{\omega }^{2}}\]
JEE Main Online Paper (Held On 12 May 2012)
A)
(a) Statement 1 is true, Statement 2 is true, Statement 2 is not the correct explanation of Statement 1.
doneclear
B)
(b) Statement 1 is false, Statement 2 is true.
doneclear
C)
(c) Statement 1 is true, Statement 2 is true. Statement 2 is correct explanation of the Statement 1.