MCQ
A meter bridge set up as shown to determine end correction at $A$ and $B$. When a resistance of $15\ \Omega$ is used in left gap and of $20\ \Omega$ in right gap, then null point comes at a distance $42\ cm$ from $A$. When these resistances are interchanged null point comes at a distance $57\ cm$ from $A$. Values of end corrections are
- A$1\ cm$, $2\ cm$
- B$2\ cm$, $3\ cm$
- C$3\ cm$, $4\ cm$
- ✓$3\ cm$, $2\ cm$
