📚 CBSE Grade-10 Study Guide Open in the Study Guide single page app →
Home › Science

Science — CBSE Class 10 board question

Q1. [1]
For a current in a long straight solenoid, N and S poles are created at the two ends. Among the following statements, the incorrect statement is :
  1. (a) The magnetic field lines inside the solenoid are in the form of straight lines, which indicates that the magnetic field is uniform at all points inside the solenoid.
  2. (b) The strong magnetic field produced inside the solenoid can magnetize the soft iron placed inside it.
  3. (c) The pattern of the magnetic field associated with a current carrying solenoid is different from the pattern of the magnetic field around a bar magnet.
  4. (d) The N and S poles exchange positions when the direction of current through the solenoid is reversed.
Previously asked in CBSE board exam
2023 31/5/1 Q16
Generated by claude-sonnet-4-6 · 2026-06-15 06:49 · grounding rag
Model Answer

The incorrect statement is (c).

The magnetic field pattern of a current-carrying solenoid is similar (not different) to that of a bar magnet, as stated in the textbook.

Explanation

The passage explicitly says: "Compare the pattern of the field with the magnetic field around a bar magnet… they are similar." Options (a), (b), and (d) are all correct facts from the chapter. Examiners expect you to directly identify the contradiction with the textbook statement. Source: Chapter 12, Section 12.2.4.

If a question refers to an image, map, graph or diagram that is not shown here, open the Study Guide single page app, go to Library and find the actual CBSE question paper. The original papers are also available on the CBSE website: cbse.gov.in.
Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.