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allsm [11]
3 years ago
6

The index of refraction for a certain type of glass is 1.641 for blue light and 1.603 for red light. When a beam of white light

(one that contains all colors) enters a plate of glass from the air at an incidence angle of 40.05∘, what is the absolute value of ????, the angle in the glass between blue and red parts of the refracted beams?
Physics
1 answer:
exis [7]3 years ago
6 0

Answer:

The angle between the emergent blue and red light is 0.566^{o}

Explanation:

We have according to Snell's law

n_{1}sin(\theta _{i})=n_{2}sin(\theta _{r})

Since medium from which light enter's is air thus n_{1}=1

Thus for blue incident light we have

1\times sin(40.05)=1.641\times sin(\theta _{rb})\\\\\therefore \theta _{rb}=sin^{-1}(\frac{sin(40.05)}{1.64})\\\\\theta _{rb}=23.10

Similarly using the same procedure for red light we have

1\times sin(40.05)=1.603\times sin(\theta _{rr})\\\\\therefore \theta _{rr}=sin^{-1}(\frac{sin(40.05)}{1.603})\\\\\theta _{rr}=23.66^{o}

Thus the absolute value of angle between the refracted blue and red light is

|23.66-23.10|=0.566^{o}

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