- Why does soap solution appear cloudy ?
Verified Answer
A. Soap micelles are large enough to scatter light/साबुन का कणपुंज इतना बड़ा होता है कि प्रकाश को छितरा देता है
B. Soap micelles easily refract light/साबुन का कणपुंज प्रकाश का आसानी से अपवर्तन कर देता है
C. Soap micelles are too tiny to reflect light/साबुन का कणपुंज इतना होता है कि यह प्रकाश को परावर्तित नहीं कर सकता है
D. Soap micelles never scatter light/साबुन का कणपुंज प्रकाश को कभी भी छितरा नहीं पाता है
Explanation:
Soap solutions appear cloudy due to the Tyndall effect. In a soap solution, soap molecules form aggregates called micelles, which are colloidal particles. These micelles are large enough (typically in the range of $1 \text{ nm}$ to $1000 \text{ nm}$) to scatter light passing through the solution, making the light path visible and the solution appear cloudy or milky. Refraction and reflection are different phenomena, and micelles do scatter light.