In an experiment designed to show Brownian motion, smoke particles in a container are illuminated by a powerful light source and viewed through a microscope. The particles appear as tiny bright specks that are moving. What causes the Brownian motion?
- Acollisions between the smoke particles and air molecules
- Bcollisions between the smoke particles and the walls of the container
- Cconvection currents within the air as it is warmed by the light source
- Dkinetic energy gained by the smoke particles on absorption of light