Question

20. Study these tables related to refractive index and answer the questions
that follow:
Material medium
Refractive index
Air
1.0003
Ice
1.31
Water
1.33
Crown glass
1.53
Canada Balsam
1.53
Rock salt
1.54
Alcohol
1.36
Kerosene
1.44
Fused quartz
1.46
Turpentine oil
1.47
Benzene
1.50
Carbon disulphide 1.63
Dense flint glass
1.65
Sapphire
1.77
Diamond
2.42
20(0) What is meant by uw = 1.33 ?
20(ii) Name a liquid which is optically denser than water but its mass
density is less than water?
20(iii)In Which of the following has least velocity of light?
a) air
b) Carbon disulphide c) diamond d) Water
20(iv)What happens to ray, when it enters a denser medium from rarer
medium?
SECTION B​

Answer 1

Answer:

this is very long question ok

Answer 2

Answer:

I am not free

Explanation:

do it yourself