1011 past contests
Topic 54 · Balanced wheatstone bridge: finding current from power dissipated in the unknown resistor
Topic 18 · Physical quantities governing the rate of thermionic emission
Topic 49 · Symmetry of incidence and emergence angles at minimum deviation through a prism
Topic 2 · Focus-directrix property of a parabolic orbit about earth
Topic 8 · Economic and technological applications of nuclear and particle physics
Topic 30 · Newton's law of cooling: rate of temperature change under convection-dominated heat loss
Topic 39 · Emf induced by mutual inductance from a changing current
Topic 7 · Kirchhoff's current law as a statement of conservation of charge
Topic 31 · Work done by an ideal gas in an isothermal expansion
Topic 34 · Impulse-momentum theorem: finding net force from a change in momentum over a short time
Topic 30 · Proportionality of conductive heat transfer rate to cross-sectional area
Topic 23 · Statistical (counting) error in radioactive/geiger-muller count rate measurements
Topic 15 · Density of a crystalline solid from its unit cell structure and lattice constant
Topic 10 · Entropy change at constant volume from a temperature-dependent internal energy
Topic 2 · Eccentricity of an elliptical orbit from its semi-major and semi-minor axes
Topic 26 · De broglie wavelength of an electron from its kinetic energy
Topic 46 · Focal length and power of a compound (contact) lens system
Topic 26 · Wien's displacement law: peak wavelength of blackbody radiation
Topic 42 · Impedance of an ac circuit from resistance and reactance
Topic 26 · Rate of photons striking a surface from a laser's power and wavelength