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Direction: For question… (Class 10 Science 2026, Q32)

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ScienceCBSE Class 10 · Board exam 2026, set 31/4/1 · 1 mark · Assertion-reason

CBSE Class 10 Science 2026: question 32

Set in the CBSE Class 10 board exam of 2026, paper 31/4/1, section C, question 32, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q32 · 1 mark · Assertion-reasonCompetency-basedMagnetic Effects of Electric Current

Direction: For question number 32, two statements are given - one labelled as Assertion (A) and other labelled as Reason (R). Select the correct answer to this question from the codes (A), (B), (C) & (D) as given below.

Assertion (A): With the help of compass, magnetic field lines can be traced outside the bar magnet.

Reason (R): The north pole of a compass needle always points towards the south pole of the magnet when brought close to it.

  1. (A)Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
  2. (B)Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
  3. (C)Assertion (A) is true, but Reason (R) is false.
  4. (D)Assertion (A) is false, but Reason (R) is true.

Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 31/4/1.

Hints

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

Hint 1

How is a compass used to plot field lines?

Hint 2

Recall that unlike poles attract.

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 is true: field lines outside a bar magnet are traced by marking the successive positions of a compass needle.

  2. R is true: unlike poles attract, so the needle's north pole points towards the magnet's south pole. The scheme treats R as the explanation of A. Answer: option (A).

    1 mark

Answer: (A)

Where the marks are

  • Both true and R explains A, option (A) (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Magnetic Effects of Electric Current, one at a time, marked against the answer key and marking points.Back to the full paper2026 board paper, set 31/4/1: 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.