A beam of light is passed through starch solution
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a starch solution is a colloidal solution. in a colloidal solution, particles are relatively big. so, when a beam of light is passed, the path of light is visible. it scatters. this scattering of beam of light through a colloidal solution is called tyndall effect.
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Scattering of light by particles in a colloid or suspension is known as Tyndall effect. When a strong beam of light is passed through a colloidal solution, the path of the light becomes visible when viewed from a direction at right angle to that of the incident light. It is observed when the particles are larger than the wavelength of visible light. Usually the particles of size in the range of 10-9 m to 10-6 m scatter the visible light. The intensity of Tyndall scattering increases with increase in the size of colloidal particles as well as the concentration
this may help dude
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