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Q.

A cubical  container of side length  L is half filled with liquid of density ρ  and placed on the floor of an elevator accelerating downward with acceleration  'g/2'. Now the container is given a horizontal acceleration parallel to one of the horizontal edge then (P0= atmospheric pressure)  

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a

Pressure at center of container will remains unchanged upto a certain value of horizontal acceleration

b

The maximum gauge pressure at the bottom surface when liquid is about to over flow is  P0+ρgL2

c

The horizontal acceleration for which liquid over flow takes place is g2

d

The minimum pressure at the bottom surface when liquid is about to over flow is  P0

answer is A, B, D.

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Detailed Solution

Upto horizontal acceleration  g/2 there will be no over flow.
tan45ο=ahgeff=1       ah=g/2

Height of liquid at the centre is unchanged

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