Light from a helium-neon laser ( = 632.8 nm) is incident upon a 0.200-mm wide slit. Find the total width of the central maximum 2.00 m from the slit.
Question 2
Suppose you live on the near side of the Moon in the crater Copernicus. How often will the Sun set below your horizon?
a. Every 12 hours
b. Every 24 hours
c. Every 29.5 days
d. Never