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# 5 If n-A/λ5, where A is a constant. Find the following when--= - a) Group velocity...

## Question

###### 5 If n-A/λ5, where A is a constant. Find the following when--= - a) Group velocity...

5 If n-A/λ5, where A is a constant. Find the following when--= - a) Group velocity b) Group index

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