On a diffraction grating having 3660 lines per cm, light with a wavelength of 656 nm is incident perpendicularly. What is the number of bright stripes (maximum) visible? a) 9 b) 11 c) 8 d) 4

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On a diffraction grating having 3660 lines per cm, light with a wavelength of 656 nm is incident perpendicularly. What is the number of bright stripes (maximum) visible?
a) 9
b) 11
c) 8
d) 4

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