Radioactive substance emits –

Which one of the following is not radioactive?

Which among the following is a positively charged particle emitted by a radioactive element?

The ultimate product of radioactive disintegration of uranium is –

The energy of sun is released due to-

Consider the interaction forces between two protons separated by a distance of the order of 1 femtometer (10⁻¹⁵ m). The correct order of the strengths of the electromagnetic, gravitational and nuclea…