Light is incident on a double-slit. The fourth bright band has an ...

[CharlieWard]

Light is incident on a double-slit. The fourth bright band has an angular distance of 7.0 from the central maximum. What is the distance between the slits (in mm)? (Assume the frequency of the light is 5.4  1014 Hz.)
 a. 27
  b. 21
  c. 24
  d. 18
  e. 14

Question 2

Estimate the distance (in cm) between the central bright region and the third dark fringe on a screen 5.00 m from two double slits 0.500 mm apart illuminated by 500-nm light.
 a. 3.47
  b. 2.15
  c. 1.75
  d. 1.50
  e. 1.25

[aham8f]

Answer to Question 1

D

Answer to Question 2

E