Author Question: Two narrow slits are 0.025 mm apart. When a laser shines on them, bright fringes form on a screen ... (Read 445 times)

magmichele12 · **on:** Jul 28, 2018

Two narrow slits are 0.025 mm apart. When a laser shines on them, bright fringes form on a screen that is a meter away. These fringes are 1.3 cm apart. What is the separation between the m = 2 bright fringe and the central fringe?
a. 2.6 cm
c. 8.6 cm
b. 5.3 cm
d. 6.0 cm

Question 2

A Young's double slit has a slit separation of 2.50 10-5 m on which a monochromatic light beam is directed. The resultant bright fringes on a screen 1.00 m from the double slit are separated by 2.30 10-2 m. What is the wavelength of this beam? (1 nm = 10-9 m)
a. 575 nm
c. 373 nm
b. 454 nm
d. 667 nm