Question

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

Answer 1

Answer:

Turpentine

Explanation:

Refrective index of water =1.33

Refrective index of kerosene =1.44

Refrective index of Turpentine =1.47

Hence,

Optical density of Turpentine is maximum so light travel with minimum speed so,

Speed of light maximum in water then kerosene then minimum in Turpentine

Answer 2

Explanation:

given kerosine =1.44, turpentine =1.47 ,water=1.33

lights travel the fastest in a medium Having minimum optical density of lower refractive index

since,

water=1 .33 is the lowest speed of a light is maximum in water