How many bright fringes can be seen on the screen

Reference no: EM13522752

A diffraction grating with 610 lines per mm is illuminated with light of wavelength 520 nm. A very wide viewing screen is 2.1 m behind the grating.

What is the distance between the two m= 1 fringes?

How many bright fringes can be seen on the screen?

Reference no: EM13522752

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