Although sugar looks white, it is clear when placed in water (before dissolving) because
A) the optical environment outside the crystal is more dissimilar to that of the crystal itself and impedance mismatch has decreased..
B) the optical environment outside the crystal is closer to that of the crystal itself and impedance mismatch has decreased.
C) the optical environment outside the crystal is closer to that of the crystal itself and impedance mismatch has increased..
D) small sugar grains are metallic and act as mirrors, but mirrors don't work under water.

Question

Quizplus · Accepted Answer

Sugar appears clear in water before dissolving because the optical environment outside the crystal becomes closer to that of the crystal itself, which decreases the impedance mismatch, allowing light to pass through with less scattering.

Although Sugar Looks White, It Is Clear When Placed in Water