Question

With respect to air the refractive index of ice is 1.31 & that of rock salt is 1.54. Calculate the refractive of rock salt with respect to ice.

Answer 1

see, refractive index = (speed of light in air or vaccum)/( speed of light in that medium)
refractive index of rock salt with respect to ice = (speed of light in ice)/(speed of light in rock salt)
speed of light in ice = c/(1.31)
and, speed of light in rock salt = c/(1.54)
required refractive index = 1.54/1.31 = 1.175 

Answer 2

The refractive of rock salt with respect to ice is 1.175

Step-by-step explanation:

Given:

The refractive index of ice $= 1.31$.

The refractive index of rock salt $=1.54$.

To find:

To calculate the refractive of rock salt with respect to ice.

Formula used:

$n_{si} =\frac{n_{s} }{n_{i} }$

Solution:

Let us consider the refractive index of ice be $n_{i}$.

The refractive index of rock salt be $n_{s}$.

Therefore $n_{si} =\frac{n_{s} }{n_{i} }$

$n_{si} =\frac{1.54}{1.31}$

$n_{si} =1.176$

Hence,  the refractive of rock salt with respect to ice is $1.176$

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