CBSE 2025 · Region 1 · Set 1 · Q19 · 1 mark
Assertion (A) : No two magnetic field lines are found to cross each other. Reason $\displaystyle (R)$ : The compass needle cannot point towards two directions at the point of intersection of two magnetic field lines.
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
Magnetic Effects of Electric CurrentMagnetic Field and Field LinesUnderstandassertion_reasonmedium
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CBSE Class 10 Science past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.