A diamagnetic liquid is filled in a U-tube. One arm of a U-tube is placed in an external magnetic field with the meniscus in line with the field. The level of the liquid in that arm will

Step-by-step solution

Diamagnetic substances are repelled by magnetic fields and tend to move from regions of stronger magnetic field to regions of weaker magnetic field. When one arm of the U-tube containing a diamagnetic liquid is placed in an external magnetic field, the liquid experiences a force pushing it away from the stronger field region. As a result, the level of the liquid in the arm placed in the magnetic field will fall. Answer: fall.