बल का परास (range) अत्यधिक कम, लगभग 10-16 m की कोटि का होता है।

Arrange the following fundamental forces in increasing order of their relative strength: i. Electromagnetic force ii. Strong Nuclear force iii. Gravitational force

Consider the interaction forces between two protons separated by a distance of the order of 1 femtometer (10-15 m). The correct relative order of the strengths of the fundamental forces acting between them is: