Two slits spaced 0.45mm apart are placed 75 cm from a screen. What is the distance between the second and third dark lines of the interference pattern on the screen when the slits are illuminated with coherent light with a wavelength of 500nm?

Question

anonymous · Answer

if anyone ever comes... be back in 10

arindameducationusc · Answer

y=(n-1/2) * (Lamda*D/d)
position of n order minima (Dark Fringe)
where n= 1st, 2nd, 3rd.......nth minima
Lambda=wavelength, in this case 500nm
D= distance from a screen (75cm)
d=spacing between slits(.45nm)

put the value n=3and calculate
next put n=2 and calculate.
then just take the difference of the two, you will get your answer......

arindameducationusc · Answer

@SRoyea.. if you have any queries please contact me

anonymous · Answer

Fringe spacing=(lambda)(L)\d

anonymous · Answer

Is the answer 8.3*10 rest to power -4....????