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Light Reflection And Refraction

Question 4:

You are given kerosene, turpentine and water. In which of these does the light travel fastest? Use the information given in Table.

Material

medium

Refractive index

Material medium

Refractive

index

Air

1.0003

Canada Balsam

1.53

Ice

1.31

-

-

Water

1.33

Rock salt

1.54

Alcohol

1.36

-

-

Kerosene

1.44

Carbon disulphide

1.63

Fused

quartz

1.46

Dense

flint glass

1.65

Turpentine oil

1.47

Ruby

1.71

Benzene

1.50

Sapphire

1.77

Crown

glass

1.52

Diamond

2.42

Answer:

Speed of light in a medium is given by the relation for refractive index (nm). The relation is given as

It can be inferred from the relation t...

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