*8.  At most, how many bright fringes can be formed on either side of the central bright fringe when light of wavelength 625 nm falls on a double slit whose slit separation is

3.76 x 10-6 m?

 

Bright Fringes in a double-slit experiment have the defining equation

 

 

Solve for m

The largest number m, would happen at largest angle which would be 90°

 

 

Fringes must be integers so

 

 

 

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This page last updated on July 7, 2018