(i) Tyndall effect can be observed when sun light is made to enter the room in the morning time through a small slit. Dust particles with zig-zag motion can be seen.
(ii) Tyndall effect can be seen when sun light passes through the canopy of a dense forest.
Some sources of noise pollution are as follows:
→ Televisions and transistors running at high volumes
→ Loudspeakers and crackers
→ Horns of buses, cars and trucks
→ Home appliances such as mixer, desert...
[Hint : (a) The size of dispersed phase particles is not much smaller the wavelength of light used.
(b) The refractive indices of the dispersed phase and the dispersion medium differ...
(i) Electrophoresis:
The movement of colloidal particles under the influence of an applied electric field is known as electrophoresis. Positively charged particles move to the cathode, while negatively charged particles move...
Regular exercise always promotes healthy aging process. Getting older is a regular cycle of life. Regular exercise delays the changes which occur due to ageing. The role of regular exercise...
Besides smelling the bad food and the smell of burning our sense of smell helps us to choose good food, perfume, soap, incense stick etc. and also to find out...
The shelters of the people living on the mountains of Jammu and Kashmir are basically in the form of a tent called Rebo. These can be packed up and carried...
