Light of wavelength `6000 A^(@)` is incident on a single slit. The first minimum of the diffraction pattern is obtained at 4 mm from the centre. The screen is at a distance of 2 m from the silt. The slit width will beA. `0.3mm`B. `0.2mm`C. `0.15mm`D. `0.1mm`

Light of wavelength `6000 A^(@)` is incident on a single slit. The fir

1.	Light of wavelength `6000 A^(@)` is incident on a single slit. The first minimum of the diffraction pattern is obtained at 4 mm from the centre. The screen is at a distance of 2 m from the silt. The slit width will beA. `0.3mm`B. `0.2mm`C. `0.15mm`D. `0.1mm`
Answer» Correct Answer - A From, `a sin theta = n lambda` , `a(x)/(D) = n lambda` or `a = (n lambda D)/(x) = (1xx6000xx10^(-10)xx2)/(4xx10^(-3))` `:. A = 3xx10^(-4)= 0.3mm`

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Light of wavelength `6000 A^(@)` is incident on a single slit. The first minimum of the diffraction pattern is obtained at 4 mm from the centre. The screen is at a distance of 2 m from the silt. The slit width will beA. `0.3mm`B. `0.2mm`C. `0.15mm`D. `0.1mm`

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