MCQ
Two short magnets placed along the same axis with their like poles facing each other repel each other with a force which varies inversely as
- ASquare of the distance
- BCube of the distance
- CDistance
- ✓Fourth power of the distance
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$(1)$ $|\Delta \phi|$ remains the same if the parabolic wire is replaced by a straight wire, $y=x$ initially, of length $\sqrt{2} L$
$(2)$ $|\Delta \phi|$ is proportional to the length of the wire projected on the $y$-axis.
$(3)$ $|\Delta \phi|=\frac{1}{2} B _0 V _0 L$ for $\beta=0$
$(4)$ $|\Delta \phi|=\frac{4}{3} B_0 V_0 L$ for $\beta=2$
