Physics Past Questions and Answers

A galvanometer of resistance 20\(\Omega\) is to be provided with a shunt that \(\frac{1}{10}\) of the whole current in a circuit passes through the galvanometer. The resistance of the shunt is

What type of reaction is represented by the following scheme? \( ^2 _1X \) + \( ^{2} _{1}Y \) + \( ^{3} _{2}Z \) + \( ^{1} _{0}n \) + energy

Which of the following statements is TRUE of photoelectric effect?

Isotopes are nuclei which have

A radioactive sample initially contains N atoms. After three half-lives the number of atoms that have disintegrated is