Open a free account to start the full syllabus and interactive lessons — Google or mobile number both work.
Wave speed on a string depends on tension and linear mass density.
Sound is a compression-rarefaction wave; speed set by bulk modulus and density.
Sound travels fastest in solids, slower in liquids, slowest in gases.
Reflection law and Snell's law for refraction at a boundary.
Deviation through a prism and the minimum-deviation condition.
Splitting of white light; cause of rainbows and angular dispersion.
Critical angle and the working principle of optical fibres.
Light as a transverse EM wave; Poynting vector as energy-flow density.