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A diamagnetic substance is… (Class 12 Physics 2023, Q5)

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PhysicsCBSE Class 12 · Board exam 2023, set 55/1/1 · 1 mark · MCQ

CBSE Class 12 Physics 2023: question 5

Set in the CBSE Class 12 board exam of 2023, paper 55/1/1, section A, question 5, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q5 · 1 mark · MCQMagnetism and Matter

A diamagnetic substance is brought near the north or south pole of a bar magnet. It will be :

  1. (A)repelled by both the poles.
  2. (B)attracted by both the poles.
  3. (C)repelled by the north pole and attracted by the south pole.
  4. (D)attracted by the north pole and repelled by the south pole.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2023 board paper, set 55/1/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

In which direction relative to the field are diamagnetic substances magnetised?

Hint 2

They tend to move towards weaker field regions.

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. A diamagnetic substance is weakly magnetised opposite to the applied field, whichever pole is near.

    ½ mark

  2. It moves from a stronger field towards a weaker field, so it is repelled by both poles. This is option (A).

    ½ mark

Answer: Repelled by both poles, option (A)

Where the marks are

  • Diamagnetics are repelled by either pole (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Magnetism and Matter, one at a time, marked against the answer key and marking points.Back to the full paper2023 board paper, set 55/1/1: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.