Question

A given shaped glass tube having uniform corss section is filled with water and is mounted on a rotatable shaft as shown in figure. If the tube is rotated with a constant angular velocity $\omega$ when

• A. Water levels in both sections A and B go up
• B. Water level in section A goes up and that in B comes down.
• C. Water level in section A comes down and that in B it goes up
• D. Water levels remain same in both sections

Answer 1

The correct option is A Water levels in both sections A and B go up

Due to rotation about the axis , centripetal force acts on columns A and B away from axis of rotation.
The pressure difference thus created causes water level to rise up in both columns A and B.

Hence, the correct answer is option (a).