Question

কাচ গুড়ো অস্বচ্ছ কিন্তু জল ঢাললে তা স্বচ্ছ হয়ে যায় কেন?​

Answer 1

Explanation:

In the case of powdered glass, irregular reflection takes place from various particles. Thus, light is sent back into the same medium. ... On putting water over the powder incident light gets refracted through water. That is why it looks transparent.