Modern Physics & Nuclear Energy Questions with Solutions

This topic covers atomic and nuclear physics: the discovery of the electron, proton and neutron, radioactivity and its types, nuclear fission and fusion, nuclear reactors, X-rays, semiconductors, and important laws and theories, such as Einstein's mass-energy relation. Questions usually ask who discovered a particle (J. J. Thomson discovered the electron, and James Chadwick the neutron), what powers the Sun (nuclear fusion), what happens in a nuclear reactor (controlled fission), and what moderators and control rods do. Learn the three types of radioactive radiation (alpha, beta and gamma) and how they differ. Practise the modern physics questions below, written in the style of the general awareness sections of exams such as SSC, banking, railways, CUET GAT, MAH CET and CLAT. Each question comes with a detailed explanation that adds related facts, so every question helps you revise more than one point.