In a diffraction pattern, light of wavelength 580 ~nm is incident normally on a slit of width ' a ' The distance between slit and the screen is 2.5 ~m and the distance of the second order maximum from the center of the screen is 14.5 ~mm .

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In a diffraction pattern, light of wavelength 580 ~nm is incident normally on a slit of width ' a ' The distance between slit and the screen is 2.5 ~m and the distance of the second order maximum from the center of the screen is 14.5 ~mm . The value of ' a ' is

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Correct answer: A. 0.26 10⁻³ ~m

Distance of 2^ nd order maximum from the centre of the screen x= 5 D 2 d Here, D =2.5 ~m , x =14 ~mm =14 10⁻³ ~m aligned & =580 ~nm =580 10⁻⁹ ~m & d = 5 D 2 x = (5 2.5 580 10⁻⁹ ~m ) 2 14 10⁻³ ~m =259 m =0.26 10⁻³ ~m aligned

In a diffraction pattern, light of wavelength 580 ~nm is incident normally on a slit of width ' a ' The distance between slit and the screen is 2.5 ~m and the distance of the second order maximum from the center of the screen is 14.5 ~mm . The value of ' a ' is

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