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(a) What is Tyndall effect ?
(b) What happens when sunlight is scattered from the particles of very large size ?
(c) ‘Danger’ signals are always red in colour. Why ?
(b) What happens when sunlight is scattered from the particles of very large size ?
(c) ‘Danger’ signals are always red in colour. Why ?
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Red colour is least scattered by fog or smoke, so it can be seen in the same colour from a large distance. (1 Mark)