A Young's double-slit apparatus is set up where a screen is ...

[Redwolflake15]

A Young's double-slit apparatus is set up where a screen is positioned 0.80 m from the double slits. If the distance between alternating bright fringes is 0.83 cm, and the light source has a wavelength of 580 nm, what is the separation of the double slits? (1 nm = 10-9 m)
 a. 6.0  10-5 m
  c. 4.9  10-5 m
  b. 2.8  10-5 m
  d. 5.6  10-5 m

Question 2

A Young's double-slit apparatus is set up. A screen is positioned 1.16 m from the double slits, and the spacing between the two slits is 0.0500 mm. The distance between alternating bright fringes is 1.42 cm. What is the light source wavelength? (1 nm = 10-9 m)
 a. 612 nm
  c. 490 nm
  b. 280 nm
  d. 355 nm

[mceravolo]

Answer to Question 1

D

Answer to Question 2

A

[Redwolflake15]

Wow, this really help

[juliaf]

Great answer, keep it coming