Two slits are illuminated with green light (l = 540 nm). The ...

[notis]

Two slits are illuminated with green light (l = 540 nm). The slits are 0.05 mm apart and the distance to the screen is 1.5 m. At what distance (in mm) from the central maximum on the screen is the average intensity 50 of the intensity of the central maximum?
 a. 1
  b. 3
  c. 2
  d. 4
  e. 0.4

Question 2

Two slits separated by 0.050 mm are illuminated with green light (l = 540 nm). How many bands of bright lines are there between the central maximum and the 12-cm position? (The distance between the double slits and the screen is 1.0 m.)
 a. 1111
  b. 111
  c. 11
  d. 1
  e. 11111

[qytan]

Answer to Question 1

D

Answer to Question 2

C

[notis]

Thank you!

[qytan]

Always glad to help...