Multiple choice

Consider the following statements:

  1. When a bar magnet is cut into two equal halves, the pole strength of each piece becomes doubled.
  2. The ability of a material to remain magnetized after removal of the magnetizing force is known as retentivity. Which of the given statements is/are incorrect?

  1. Only (1)

  2. Only (2)

  3. Both (1) & (2)

  4. Neither (1) nor (2)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statement (1) is incorrect. When a bar magnet is cut into two equal halves, the pole strength of each piece remains the same. Each broken piece forms its own magnetic field. Statement (2) is correct. Retentivity is the capacity of a body to remain magnetized after magnetizing field has ceased to exert an effect.

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