With reference to 'Magnetic Force', consider the following statements: 1. A magnet can exert a force on another magnet without being in contact with it. 2. The force exerted by a magnet on a piece of iron is a contact force. 3. Like poles of two magnets attract each other. Which of the statements given above is/are correct?

The correct option is (a) 1 only. Explanation Magnetic force is a fundamental non-contact force in physics. It arises from the interaction of magnetic fields generated by magnets or moving electric charges. This force acts over a distance without the need for physical contact between the interacting bodies. Statement-wise Analysis - Statement 1 is Correct: A magnet creates a magnetic field in the space surrounding it. When another magnet enters this field, it experiences a magnetic force (attraction or repulsion) without physical contact. Therefore, magnetic force is classified as a non-contact force (action-at-a-distance). - Statement 2 is Incorrect: The force exerted by a magnet on a piece of iron (a ferromagnetic material) is also a magnetic force. Since magnetic force operates through a field, it does not require physical contact to act. Consequently, it is a non-contact force, not a contact force. - Statement 3 is Incorrect: According to the fundamental laws of magnetism, like poles (North-North or South-South) repel each other, while unlike poles (North-South) attract each other. Key Takeaway Magnetic force is a non-contact force capable of acting over a distance. The fundamental rule of interaction is that like poles repel and unlike poles attract.

With reference to 'Magnetic Force',… - NCERT Class 8 Science MCQ

NCERT Class 8 Science — Chapter 1: Force and pressure

mcqmedium

With reference to 'Magnetic Force', consider the following statements:

A magnet can exert a force on another magnet without being in contact with it.
The force exerted by a magnet on a piece of iron is a contact force.
Like poles of two magnets attract each other.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Science - class 8 · Page 102

Options

A1 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (a) 1 only.

Explanation

Magnetic force is a fundamental non-contact force in physics. It arises from the interaction of magnetic fields generated by magnets or moving electric charges. This force acts over a distance without the need for physical contact between the interacting bodies.

Statement-wise Analysis

Statement 1 is Correct: A magnet creates a magnetic field in the space surrounding it. When another magnet enters this field, it experiences a magnetic force (attraction or repulsion) without physical contact. Therefore, magnetic force is classified as a non-contact force (action-at-a-distance).
Statement 2 is Incorrect: The force exerted by a magnet on a piece of iron (a ferromagnetic material) is also a magnetic force. Since magnetic force operates through a field, it does not require physical contact to act. Consequently, it is a non-contact force, not a contact force.
Statement 3 is Incorrect: According to the fundamental laws of magnetism, like poles (North-North or South-South) repel each other, while unlike poles (North-South) attract each other.

Key Takeaway

Magnetic force is a non-contact force capable of acting over a distance. The fundamental rule of interaction is that like poles repel and unlike poles attract.

Your note

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