DEFINITION PHYSICS SPM #2

An idealised body that is able to absorb all electromagnetic radiation that falls on it

Time taken for a sample of radioactive nuclei to decay to half of its initial number

when the velocity of a fluid increases, the pressure in the fluid decreases and vice versa

A self-sustaining reaction in which the products of a reaction can initiate another similar reaction

When a metal surface is illuminated by a beam of light at certain frequency, electrons can be emitted from metal