MCQ
Acceleration of a particle, executing $SHM$, at it’s mean position is
- AInfinity
- BVaries
- CMaximum
- ✓Zero
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$C{{H}_{3}}-C\equiv CH\xrightarrow[{{H}_{2}}S{{O}_{4}}]{HgS{{O}_{4}}}A\xrightarrow{NaB{{H}_{4}}}B$
