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# Range of weak nuclear force is(1) ${10^{16}}m$2) ${10^{10}}$3) ${10^{ - 12}}$4) ${10^{ - 18}}$

Last updated date: 02nd Aug 2024
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The weak nuclear force has a very short effective range (around ${10^{ - 17}}$ to ${10^{ - 16}}m$) At distances around ${10^{ - 18}}m$, the weak interaction (weak nuclear force) has a strength of a similar magnitude to the electromagnetic force, but this starts decreasing exponentially with increasing distance. Scaled up by just one and a half orders of magnitude, at distances of around $3 \times {10^{ - 17}}m$ , the weak nuclear force or weak interaction becomes 10,000 times weaker.
The nuclear force is powerfully attractive between nucleons at distances of about 1 femtometre ($fm$, or ${10^{ - 15}}m$), but then it rapidly decreases to insignificance at distances beyond about $2.5fm$. But the nuclear force becomes repulsive at the distance less than $0.7fm$.
Correct answer is ${10^{ - 18}}$.