In young experiment if two straight narrow parallel slits 3 mm apart are illuminated with monochromatic light of wavelength 5900 x 10 (raise to power minus 8)cm. Fringes are observed at a distance of 3m from slits. Find width of fringes??

Dear Student ,
Here in this case ,
the width of the fringes is ,
β=λDd=5900×10-8×3003×10-1=5.9×10-3 cm

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