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A U-tube containing a liquid moves with ...

A U-tube containing a liquid moves with a horizontal acceleration a along a direction joining the two vertical limbs. The separation between these limbs is d. The difference in their liquid levels is

A

`ad//g`

B

`2da//g`

C

`da//2g`

D

`d tan (a//g)`

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The correct Answer is:
A
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