A student produces an interference pattern using a double slit ...

[armygirl]

A student produces an interference pattern using a double slit with a distance d0 between slits. The next day, he must produce an interference pattern with the same fringe spacing, but the only room available is half the length of the room from the previous day. To accomplish this, he will need a double slit with d equal to
  1. d0/2
  2. d0
  3. 2d0
  4.none of these choicesthe interference pattern cant be recreated in a different room.

Question 2

For interference to occur, which of the following must be true?
  1.The light sources must be in phase and of different colors.
  2.The light sources must be out of phase and have different wavelengths.
  3.The light sources must be out of phase and monochromatic.
  4.The light sources must be in phase and the same wavelength.

[mistyjohnson]

Answer to Question 1

1

Answer to Question 2

4

[armygirl]

Thanks for the timely response, appreciate it

[cdmart10]

Wow, this really help