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18-08-2019
Physics

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The cutoff between visible and infrared light is usually said to be somewhere between 700 and 800nm. Why is silicon transparent to most infrared light but opaque to visible light?

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20-08-2019

Answer:

The infrared photon does not have greater energy as compare to visible rays so infrared rays pass through but due to greater energy than the gap visible rays could not hence silicon is transparent to infrared rays but silicon is opaque to visible rays .

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