A) How long (in ns) does it take light to travel 1.0 m in a vacuum? b) What distance does light travel in water, glass, cubic zirconia during the time it travels in 1.0 m vacuum?

a

b

i      

ii    

iii    

Explanation:

Generally the time taken to travel 1 m in a vacuum is mathematically represented as

Here c is the speed of light with value  

So  

The distance light travels in water is mathematically represented as

Here n_w  is the refractive index of  water with value 1.333

So

The distance light travels in glass is mathematically represented as

Here n_g  is the refractive index of  glass with value 1.5

So

The distance light travels in cubic zirconia is mathematically represented as

Here n_c  is the refractive index of cubic zirconia with value 2.15

So

a and b sometimes have a positive value

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