JEE Advanced Model Paper 17 with solutions for online practice

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Question : 18 of 60
 
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In a YDSE setup, one of the slit width is four times that of the other. The separation betweenthe slits is d = 1 mm and the distance between slits and screen is D = 5 m. A monochromaticlight of wavelength λ = 6000
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incidents on slits normally. The intensity of light only dueto narrow slit on screen is I0 . If the intensity of light on screen at a point infront of thenarrow slit is nI0 . Find n :
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