Question

(i) ""The refractive index of diamond is 2.42"". What is the meaning of this statements?; (ii) Name a liquid whose mass density is less than that of water but it is optically denser than water.(Delhi - 2011)

Answer 1

Explanation:

(I) We know,

Refractive Index of a medium =

Speed of light in vacuum or air(c)/Speed of light in the medium (v)

Since,

The Refractive Index of diamond is 2.42.It means that the ratio of speed of light in vacuum or air and the speed of light in diamond is equal to 2.42.

--------------------------------------------------

(II) Kerosene.

Explanation

Kerosene and water has refractive index 1.44 and 1.33 respectively,

So, kerosene is optically denser than water.But kerosene has less mass density than water.

Therefore kerosene float on water

Hope you got your answer

Please mark as brilliant