CBSE 2026 · Region 5 · Set 1 · Q1 · 1 mark
Two small identical metallic balls having charges q and - 2q are kept far at a separation r. They are brought in contact and then separated at distance $\displaystyle \frac{\mathrm{r}}{2}$. Compared to the initial force F, they will now :
Official answer
From CBSE’s own marking scheme for this paper.
(B)
repel with a force $\displaystyle \frac{\mathrm{F}}{2}$
Electric Charges and FieldsForces between Multiple ChargesApplymcqmedium
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CBSE Class 12 Physics past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.