Question

Coherent light that contains two wavelengths, 660 nm and 470 nm passes through two narrow slits...

Coherent light that contains two wavelengths, 660 nm and 470 nm passes through two narrow slits with a separation of 0.26 mm. An interference pattern is observed on a screen 5.3 m from the slits.

(a) Sketch the setup

(b) What is the distance between the first order bright fringe for each wavelength on the screen ?

(c) What is the distance between the first dark fringe for each wavelength on the screen ?

(d) If electrons with the same wavelengths were used instead of light, would there still be an interference pattern ? How would the results change ?

Science   Advanced-Physics   
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