Two slits and 2 on the x axis and symmetric with respect to y axis are illuminated by a parallel monochromatic light beam of

Question

Two slits and 2 on the x axis and symmetric with respect to y axis are illuminated by a parallel monochromatic light beam of wavelength as shown in figure The distance between the slits is d Point O is the midpoint of the line S S and this point is considered as the origin The slits are in horizontal plane The interference pattern is observed on a horizontal plate acting as screen of mass m which is attached to one end of a vertical spring of spring constant k The other end of the spring is fixed to the ground At t 0 the plate is at a distance D d below the plane of the slits S S and spring is in its natural length The plate is left from rest from its initial position Assume that the spring is light and plate always remains horizontal unde a 2 a Ref Ych 4H1 A2 Ychauffu y r Y GRI falda di 12 fa fa ya fa 24 Ha vllai i Ra fav com cufaru Rin Audich kan Ych Geafer R on ych f u 4 Chrka Gia SI USI GERI ARTERI 0 1 S 1314 Ruch Rafa farihicken R 31 Augeh 14 wc u u fau zga A B GR Xg d X Question The rate at which fringe width is changing when plate crosses through its mean position of oscillation is hw kufa gurdi da Prvi Xg D Rafald m k S m k di elele m

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