Correct option is D
The correct answer is (D). Colloidal.
Explanation:
The path of a beam of light becomes visible when it passes through a colloidal solution due to the Tyndall effect. This phenomenon occurs because the particles in a colloidal solution are relatively larger (1-1000 nm) than those in a true solution, which scatter light in different directions, making the beam visible.
Information Booster:
- Colloidal solutions contain particles that are larger than those in true solutions (like sugar in water) but smaller than those in suspensions. These particles are large enough to scatter light.
- Tyndall effect: The scattering of light by colloidal particles is known as the Tyndall effect.
- Examples of colloidal solutions: Milk, fog, smoke
Therefore, the path of a beam of light is visible through a colloidal solution due to the scattering of light by the larger particles.
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