K.C.S.E Physics Q & A - MODEL 2007PP1QN15

K.C.S.E Physics Q & A - MODEL 2007PP1QN15

​ Brown motion of smoke particles can be studied by using the apparatus shown in figure 9 to observe the motion, some smoke is enclosed in the smoke cell and then observed through the microscope.

(a) Explain the role of the smoke particle, lens and microscope in the experiment
Smoke particles
Lens
(b) State and explain the nature of the observed motion of the smoke particles
(c) State what will be observed about the motion of the smoke particles if the temperature surrounding the smoke cell is raised slightly. 

answers