MCQ
The equivalent resistance between $A$ and $B$ is


- A$\frac {8R}{5}$
- ✓$\frac {5R}{8}$
- C$\frac {3R}{8}$
- D$\frac {7R}{8}$


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$(A)$ $r^2=n h \sqrt{\frac{1}{m k}}$
$(B)$ $v^2=n h \sqrt{\frac{k}{m^3}}$
$(C)$ $\frac{L}{m r^2}=\sqrt{\frac{k}{m}}$
$(D)$ $E=\frac{n h}{2} \sqrt{\frac{k}{m}}$
