Question

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

• A. rise.
• B. fall.
• C. oscillate slowly.
• D. remains as it is.

Hint:

Diamagnetic materials are pushed toward weaker field regions.

Answer 1

The Correct Option is B

Step 1: Rule:
Diamagnetic: repelled by the field. Paramagnetic: attracted.

Step 2: Result:
Repulsion from the strong field pushes the liquid down in the arm under the field.

Step 3: Answer:
The level falls. Option (B).

Final Answer:
Option (B). \[ \boxed{\text{(B) fall}} \]