Light of wavelength 540 nm is incident on a slit of width 0.150 ...

[captainjonesify]

Light of wavelength 540 nm is incident on a slit of width 0.150 mm, and a diffraction pattern is produced on a screen that is 3.00 m from the slit. What is the width of the central bright fringe? (1 nm = 10-9 m)
 a. 1.44 cm
  c. 2.16 cm
  b. 0.720 cm
  d. 1.76 cm

Question 2

In a Young's double-slit experiment, by how many wavelengths do the paths from the slits to the screen differ for the m = 3 and the m = 8 minima?
 a. 10
  b. 2.5
  c. 5
  d. Some other value than those given since this is for destructive interference.

[pikon]

Answer to Question 1

C

Answer to Question 2

C

[captainjonesify]

Thanks for the timely response, appreciate it

[elyse44]

Wow, this really help