Light of wavelength 520 nm is falling normally on a plane diffraction grating having 5000 lines per cm. The maximum number of orders of diffracted images seen is :

Light of wavelength 520 nm is falling normally on a plane diffraction

1.	Light of wavelength 520 nm is falling normally on a plane diffraction grating having 5000 lines per cm. The maximum number of orders of diffracted images seen is :
Answer» 2 3 4 5 Solution :For diffraction grating `( a + b ) sin theta_(n) = n lambda` Here (a + b) = `1/5000` CM. For maxima, `sin theta_(n) = 1` `(1)/(5000) xx 1 = m 520 xx 10^(-9) xx 10^(-2) n = 3`.

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Light of wavelength 520 nm is falling normally on a plane diffraction grating having 5000 lines per cm. The maximum number of orders of diffracted images seen is :

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