Author Question: A laser beam (l = 694 nm) is incident on two slits 0.100 mm apart. Approximately how far apart (in ... (Read 30 times)

TVarnum · **on:** Jul 28, 2018

A laser beam (l = 694 nm) is incident on two slits 0.100 mm apart. Approximately how far apart (in m) will the bright interference fringes be on the screen 5.00 m from the double slits?
a. 3.47 10-3
b. 3.47 10-2
c. 3.47 10-4
d. 3.47 10-6
e. 3.47 10-5

Question 2

A contact lens is made of plastic with an index of refraction of 1.50 . The lens has an outer radius of curvature of +2.0 cm and an inner radius of curvature of +2.5 cm. What are the focal length and the power of the lens?