97.29: A student performs an experiment similar to Young’s Double Slit Expe nxb w q;fr.e4;.eqfd( t;mme4riment. Coherent light passes through two narrow slits and produces a pattern of alternating bright and dark lines on a screen. Which of the following womne x;.ed fbm(q f;4 ;r4wt.qeuld 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 experimen3axoawf0u zh507s 7c ft, second and higher order bright bands can overlap. Which third order band would occur at the same location ah 5uf o szfwx7003a7cas a second order band of wavelength 660 nm?

  99.28： In the diagram, which of the followiy k)y 79zf5gxf(h*yk kljid,7,b4ba zng would represent a zone or zones of co,ibyfl(4 )yhz * gabj7k5x z7dkyk9,fnstructive 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 d odf;7l5bpgk 6oubled. To maintain the same fringe spacing on the screen, the screen-to-slit distanc6g7blof;5dp ke D must be changed to