Question

Four friends went to a forest for a picnic. When they were moving around the forest, they saw that the light was filtering from the leaves of the trees. The path of the light beam becomes visible to all of them. They wondered how this happen so. Suddenly, they saw two hunters. They immediately went to the nearest police station to complain about them. Police immediately with their force went to the forest to arrest those people. 

(a) Name the effect they observed in the canopy of the dense forest and explain it. 

(b) Where can you see this effect other than the forest? 

(c) What can you predict about the nature and awareness of these four friends?

Answer 1

(a) They observed Tyndall effect in the canopy of the dense forest. The phenomenon of scattering of light by colloidal particles, present in the medium due to which the path of the beam of the light becomes visible, is called Tyndall effect. 

(b) When a beam of sunlight enters a dusty room through a small hole, then its path becomes visible to us. 

(c) Concern for nature, concern and affection with forest animals, helping nature.