MCQ
The tension in the spring is ............ $N$


- A$0$
- B$2.5$
- ✓$5$
- D$10$

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$Reason$ : On elastic collision, the ball rebounds with the same velocity.
Statement $II :$ In the situation given above. $\theta_{1}=60^{\circ} \text { and } \theta_{2}=90^{\circ}$ In the light of the above statements, choose the most appropriate answer from the options given below
$(A)$ heat flow through $A$ and $E$ slabs are same.
$(B)$ heat flow through slab $E$ is maximum.
$(C)$ temperature difference across slab $E$ is smallest.
$(D)$ heat flow through $C =$ heat flow through $B +$ heat flow through $D$.
| $LIST-I$ | $LIST-II$ | ||
| $A.$ | Torque | $I.$ | $[M^1 L^1 T^{-2}A^{-2} ]$ |
| $B.$ | Magnetic field | $II.$ | $[L^2 A^1 ]$ |
| $C.$ | Magnetic moment | $III.$ | $[M^1T^{-2} A^{-1} ]$ |
| $D.$ | Permeability of free space | $IV.$ | $[M^1 L^2 T^{-2} ]$ |