The north pole of a very strong electromagnet is brought near the meniscus of a liquid contained in a narrow. U - tube . The liquid is seen to rise towards the north pole. This indicates that the liquid is

Options

A. ferromagnetic
B. paramagnetic
C. diamagnetic
D. non - magnetic

Answer

To solve the problem step by step, let's analyze the situation described in the question.

### Step 1: Understand the Scenario
The problem states that the north pole of a strong electromagnet is brought near the meniscus of a liquid in a narrow U-tube. The liquid is seen to rise towards the north pole.

### Step 2: Analyze the Behavior of the Liquid
When the north pole of the magnet is brought close to the liquid, the liquid rises towards the magnet. This indicates that the liquid is responding to the magnetic field produced by the magnet.

### Step 3: Identify the Types of Magnetic Materials
There are different types of magnetic materials:
- **Ferromagnetic**: These materials are strongly attracted to magnets (e.g., iron, nickel). If the liquid were ferromagnetic, it would rise significantly towards the magnet.
- **Paramagnetic**: These materials are weakly attracted to magnets. They will show a slight rise in the presence of a magnetic field.
- **Diamagnetic**: These materials are repelled by magnets and would not rise towards the magnet.
- **Non-magnetic**: These materials do not respond to magnetic fields.

### Step 4: Determine the Type of Liquid
Since the liquid in the U-tube is rising towards the north pole of the magnet, it indicates that the liquid is being attracted by the magnetic field. The significant rise suggests that it is not simply a non-magnetic or diamagnetic liquid.

### Step 5: Conclusion
Given that the liquid is rising towards the magnet, it must be a **paramagnetic liquid**. This means that the liquid is weakly attracted to the magnetic field, causing it to rise towards the north pole of the electromagnet.

### Final Answer
The liquid is **paramagnetic**.

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