Questions
In Young's double slit experiment slit separation . Then angular separation between 5th bright fringe and 2nd dark fringe (in radian) is
detailed solution
Correct option is A
Distance of 5th bright fringe from the centre of screen, y5=5λD/d and the distance of second dark fringe from the centre of the screen y2=1+d2λD/d=3λD2d∴ Angular separation =y5−y2D=5λDd−3λD2dD=7λ2d=7λ2×5λ=0.7 radianTalk to our academic expert!
Similar Questions
In Young's double slit experiment, number of fringes formed on a given length on the screen is 15. Now the whole experimental set-up is immersed in a liquid of refractive index 5/3. Then number of fringes formed on the same length on the screen is
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