1.

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

Answer»

SOLUTION :We FIND the values of refractive index of given substances as :
For keronsene N = 1.44, turpentine n = 1.47 and water n = 1.33
As refractive index of water is least out of three substances, hence as per relation `upsilon = (C)/(upsilon)`, it is clear that speed of light is maximum in water. So, light TRAVELS fastest in water.


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