Physics Olympiad: Electricity, Magnetism, Optics and Modern Physics
Six olympiad questions on Class 12 physics: a conductor with a charge in a cavity, a capacitor whose battery is reversed, a proton crossing into a magnetic field, a rod sliding along rails that end in a capacitor, a double slit lit by two colours, and the daughter of a radioactive parent. Three have one correct option and three have one or more. Every question has a hint and a full worked solution.