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Brownian Motion

Scattering of...

Question

Scattering of light by colloidal particles is known as :

A

Tyndall effect

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B

Brownian motion

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C

Reflection

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D

Rectilinear propagation

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Solution

The correct option is A Tyndall effect
Tyndall effect is also known as Tyndall scattering,is light scattering by particles in a colloid or particles in a fine suspension. It is named after the 19th century physicist John Tyndall.

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Q. The scattering of light by colloidal particles is known as the Tyndall effect.

The phenomenon of light scattering by particles in a colloid is known as ________________.

Q. Defenitions of
(i)Scattering of light
(ii) Tyndall effect
by the term "colloidal particles" in the definition of tyndall effect, what do we mean? Does it include particles such as air molecules, water droplets, dust particles, or just the colloidal particles found in colloids?

Q. Tyndall effect takes place due to scattering of light by colloidal particles.

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Q. Assertion :All colloidal dispersions give very low osmotic pressure and show very small freezing point depression or boilling point elevation. Reason: Tyndall effect is due to scattering of light from the surface of colloidal particles.

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