Toothpaste exhibits characteristics of Bingham plastic fluids, which behave like a solid until a certain yield stress is applied, and then flow like a viscous flui(D) This property is common for materials like toothpaste, paints, and chocolate.
Conclusion: Toothpaste is a Bingham plastic fluid because it shows both solid and liquid characteristics depending on the applied stress.
The Rayleigh scattering loss, which varies as ……… in a silica fiber.
The Rayleigh scattering loss, which varies as __________ in a silica fiber.