You can determine the index of refraction of a substance by determining its critical angle. (a) What is the index of refraction of a substance that has a critical angle of 460 when submerged in water (nwater = 1.333)? Your answer should be a number with three decimal places, do not include the unit.

Complete Question

You can determine the index of refraction of a substance by determining its critical angle. (a) What is the index of refraction of a substance that has a critical angle of when submerged in water ()? (b)What would the critical angle be for this substance in air()

Your answer should be a number with three decimal places, do not include the unit.

a

b

Explanation:

From question we are told that  

   The critical angle is  

    The refractive index of water is  

Generally the critical angle is mathematically represented as

Considering question a

Here

So

=>  

=>  

Considering question b

Generally the critical angle is mathematically represented as

Here

=>  

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

the inner core.

good luck: )

klicker