PH-1709
Brownian motion
Physics · Secondary 4 · Medium · Brownian motion
A student observes Brownian motion of tiny dust particles in still air using a microscope. Which change would make the random motion of the dust particles less noticeable?
- Cooling the air around the dust particles.
- Shining a brighter light on the dust particles.
- Stirring the air quickly with a fan.
- Using much smaller dust particles in the same air.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.