97.29: A student performs an experiment similar to Young’s Double bg7v, r3p7a+t w5ei9k*3 jw pncn *o(ql5 ithmSlit Experiment. Coherent light passes through two narrow slits and produces a pattern of alternating bright and dark lines on a screen. Which of the arpw7*9* tij (e3 3 ,vc5wi7n5+hmgptoqknblfollowing would cause the bright lines on the screen to be further apart?
I. Increasing the distance between the slits.
II. Decreasing the distance between the slits.
III. Decreasing the wavelength of the light.

  94.32: In Young’s double slit experiment, second and higher order bright bhpb b7ef.8lz9pqe 6( fands can overlap. Which third order band would occur atzp( p6 l.ffbebe89q7 h the same location as a second order band of wavelength 660 nm?

  99.28： In the diagram, which of the follozgf63al6bp1rmu2x f3) us6il hpp0 .gwing would represent a zone or zones of construgpf6hp0uxlr6 . 3 f6gzbmia 13u lp)2sctive interference?
(1) from P to A (2) from P to B (3) from P to C

  06.45: In a Young's double-slit experiment, the slit separation is dr,b twc* v;9vcoubled. To maintain the same fringe spacing on the screen, the screevcbt,w c ;9vr*n-to-slit distance D must be changed to