7. The circuit shown in the figure is in steady state for a long time. The connection to battery is suddenly broken (switch S is opened up). What is the charge (in C) on the capacitor after 0.001 sec.? (a) 100 8. S 84V 600 40 5u F 802 2002 (b) 100 e (c) 100 e4 (d) 0 Figure shown two blocks A and B having mass 2kg and 4kg moving with a speed 4 m/sec and 2 m/sec respectively. The maximum compression in the spring and final velocity of 2kg block and respectively. 4m/sec K 10 N/m 2m/s 2kg 0000000 4kg 9. 24 (a) m, 3 m/s 45 Smooth 24 24 (b) m, 3 m/s (c) m, 4/3 m/s 24 (d) m, 8/3 m/s 25 45 25 In the figure, there is a conducting wire having current i and which has a shape of closed half ellipse is kept in a uniform magnetic field B as shown. The magnitude of magnetic b dipole moment of loop and torque acting on it are- b b B a (a) abi,0 (b) a bi, abiB bi abiB (c) 2 2 abi (d) -,0 2 10. What minimum speed does a 100g particle need At point B to reach point A? The graph shows potential energy versus position. U (J) 5 2. 21 Asha X A B (a) 40 m/s (b) 60 m/s (c) 10 m/s (d) 5 m/s