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Physics · 2025 · 1 mark
CBSE 2025 · Region 6 · Set 1 · Q12
Inside a nucleus, the nuclear forces between proton and proton, proton and neutron, neutron and neutron are F_pp, F_pn and F_nn respectively. Then:
Inside a nucleus, the nuclear forces between proton and proton, proton and neutron, neutron and neutron are $\displaystyle \mathrm{F}_{\mathrm{pp}}, \mathrm{F}_{\mathrm{pn}}$ and $\displaystyle \mathrm{F}_{\mathrm{nn}}$ respectively. Then :
Official answer
(D)
$\displaystyle \mathrm{F}_{\mathrm{pp}}=\mathrm{F}_{\mathrm{pn}}=\mathrm{F}_{\mathrm{nn}}$
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CBSE Class 12 Physics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.