Assertion (A): When beam of light is passed through a colloidal solution placed in a dark place
the path of the beam becomes visible.
Reason(R): Light gets scattered by the colloidal particles.
i) Both A and R are true, and R is correct explanation of the assertion.
ii) Both A and R are true, but R is not the correct explanation of the assertion.
iii) A is true, but R is false.
iv) A is false, but R is true.
Answers
Answer:
i) first is correct.
Explanation:
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Answer:
Concept:
The correct option is (i) Both A and R are true, and R is the correct explanation of the assertion.
When a beam of light is passed through a colloidal solution placed in a dark place the path of the beam becomes visible. Light gets scattered by the colloidal particles.
Explanation:
The Tyndall effect is a phenomenon whereby the light beams that are aimed at a colloid are scattered. All colloidal fluids and certain extremely fine suspensions exhibit this effect. Consequently, it can be used to confirm whether a certain solution is a colloid. Both the frequency of the incident light and the density of the colloidal particles affect how much light is dispersed.
The presence of colloidal particles in the solution prevents a light beam from passing through a colloid fully. Colliding with the colloidal particles, the light is dispersed (it deviates from its normal trajectory, which is a straight line).
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