MCQ
The tension $T$ in the string shown in figure is


- ✓Zero
- B$50\, N$
- C$35 \sqrt 3\,\ N$
- D$(\sqrt 3 -1) 50\,N$

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| S.No. | $MS\;(cm)$ | $VS$ divisions |
| $(1)$ | $0.5$ | $8$ |
| $(2)$ | $0.5$ | $4$ |
| $(3)$ | $0.5$ | $6$ |
If the zero error is $- 0.03\,cm,$ then mean corrected diameter is ........... $cm$