Question: Q 5 . A diffraction pattern is observed in the focal plane of a lens of focal length 5 m which lies behind a double

5 .

A diffraction pattern is observed in the focal plane of a lens of focal length

5

m which lies behind a double slit illuminated by light of wavelength

\ (5 \

times

10^{- 7} \

mathrm

{

} \) .

The spacing between the centres of successive bright fringes is

4

.

However to either side of the central fringe one finds the fifth, tenth....fringes are extremely faint. Find the width of the slits and their distance apart.

I will

100 %

like the upload, please

$Q 5 . A diffraction pattern is observed in the$

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