A beaker is filled in with water is accelerated $a $ $m/s^2$  in $+x$ direction. The surface of water shall make on angle
  • A$tan^{-1}(a/g)$ backwards
  • B$tan^{-1}(a/g)$ forwards
  • C$cot^{-1}(g/a)$ backwards
  • D$A$ and $C$ both
Diffcult
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