Name a liquid whose mass density is less than that of water but is optically denser than water.

Q. (i) "The refractive index of diamond is 2.42”. What is the meaning of this statement?

(iii) Name a liquid whose mass density is less than that of water but it is optically denser than water.

Q. Assertion :If optical density of a substance is more than that of water then the mass density of substance can be less than water. Reason: Optical density and mass density are not related.

Q. It is given that the value of $\left(sini/sinr\right)$ when light enters from medium P to medium Q is less than 1.

Q. If same mass of liquid water and a piece of ice is taken, then why is the density of ice less than that of liquid water?