How many bright fringes can be observed on a screen

Reference no: EM13991105

A laser beam of wavelength 720 nm shines through a diffraction grating that has750 lines/mm and observed on a screen 1.4 mbehind the grating.

Part A. How many bright fringes can be observed on a screen? Express your answer as an integer.

Reference no: EM13991105

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